SHORTWAVEMUSIC

ShortWaveMusic (2005-2013) was a global sound project and documentary series which aimed to preserve the sound of regional and international broadcasting around the world. Recordings included low-power and community stations, pirate and clandestine transmissions, or traditional international broadcasters. The goal of the project was to tell the story of shortwave broadcasting in the early 21st century by exploring the extraordinary and varied ways in which people continue to communicate via radio, despite the advent of newer and more glamorous technologies. The project is currently on indefinite hiatus.

View a map or download a Google Earth map [KML] of every SWM transmitter location recorded 2009-2013.

View the complete catalogue of recordings 2009-2013.

The entire project will be made available here via streaming in late 2017. Albums will be added on a rolling basis.

For maximum enjoyment, we recommend you play these compilations on Shuffle.

Shortwavemusic #1: 11/12/2003, 5800 kHz, 0620 UTC

Radio Bulgaria

Time/Freq Unknown 2002

Radio Tunis

Sri Venkatesa Suprabhatam: Time/Freq Unknown 2002

M.S. Subbulakshmi (via All India Radio)

Ney Music from Azerbaijan: 09/11/2001, Time/Freq Unknown

[No Station ID]

Interval Signal: 09/11/2001, Time/Freq Unknown

Voice of Turkey

Go Away From Me: Time/Freq Unknown 2001

Eleni Vitali (via Foni tis Elladas)

09/15/2003, 7275 kHz (0415 UTC)

Radio Tunis

The Dream: 05/20/2005, 7440 kHz (~0200 UTC)

Valentin Silvestrov (via Radio Ukraine International)

Indian Film Music (Perhaps Lata Mangeshkar)

All India Radio

Sweet Hour of Prayer (Time/Freq Unknown January 2001)

The Vocal Majority Chorus (via Shortwave)

Oh My Good Ol' Gal (Time/Freq Unknown 2001)

Suzie Ungerleider (via Radio Canada International)

Group Song, African Language: 10/12/2003, 9370 kHz (0220 UTC)

WTJC

Balafon Music: 10/06/2003, 4835 kHz (2335 UTC)

Radio Mali

Batwaness Beik: 6/1/2005, 11885 kHz (0050 UTC)

Warda (via Radio Cairo)

Quran Recitation: 05/21/2005, 11855 kHz (~0200 UTC)

Broadcasting Service of the Kingdom of Saudi Arabia

Ja Izlezi, Djurdjo: 07/03/2005, 9680 kHz (2324 UTC)

Pavle Aksentijevic (via International Radio of Serbia and Montenegro)

Sarı Köynek: 07/03/2005, 9460 kHz (2233 UTC)

Hilal Özdemir (via Voice of Turkey)

07/03/2005, 9460 kHz (2233 UTC) #2

Voice of Turkey

07/03/2005, 9460 kHz (2233 UTC) #3

Voice of Turkey

1950s Jukebox Pop Pastiche: 09/19/2003, 6175 kHz (0327 UTC)

Voice of Vietnam

A Cappella Song: 09/15/2003, 4960 kHz (1020 UTC)

Voice of America (via São Tomé)

Znak Beskonechnost: 07/04/2005, 7125 kHz (2357 UTC)

Zemfira (via Russia International Radio)

Reeds and Chants: 7/9/2005, 15505 kHz (2010 UTC)

Radio Kuwait

Betsal Les Alya: 07/03/2005, 11885 kHz (2353 UTC)

Fayza Ahmed (via Radio Cairo)

Duelling XMTRs! #1: 06/01/2005, 11920 kHz (0115 UTC)

Voice of the Islamic Republic of Iran vs. HCJB

Trávnice Spod Rozsutca: 09/15/2003, 5930 kHz (0145 UTC)

Girls singing group from the village of Terchova (via Radio Slovakia International)

Precious Jesus: 05/30/2005, 5950 kHz (0210 UTC)

Family Radio International

Jesus Now: Freq/Time Unknown 2001

Family Radio International

Umri Ma Bansa: 07/17/2005, 15445 kHz (1948 UTC)

Abdel Gadir Salim All-Stars (via VOA)

Oyinbo Liasu: 07/17/2005, 15445 kHz (1948 UTC)

Kiké Lomo (via VOA)

Ragha Bhairavi: 07/17/2005, 13605 kHz (2023 UTC)

Bundu Khan (via All India Radio)

Ancient Egypt Fanfare: 07/17/2005, 9990 kHz (2135 UTC)

Radio Cairo

Shut the Gate: Time/Freq Unknown 2001

Radio Australia

Interval Signal with QRM: Time/Freq Unknown 2001

Argentine Radio

The Death of King Arthur: Time/Freq Unknown 2002

Boris Grebenshikov (via Voice of Russia)

Toi: Time/Freq Unknown 2002

P.I.F. (via Shortwave)

Drum and Flute Cloud: 07/24/2003, 17810 kHz (1157 UTC)

NHK

Kita Sakaba: Freq/Time Unknown 2002

Takashi Hosokawa (via Radio Japan)

Suzie Q (Sideband Version): Freq/Time Unknown 2001

CCR (via Shortwave)

Rag Pilu Thumri: 07/17/2005, 13605 kHz (2023 UTC)

Ram Narayan (via All India Radio)

Valleys of Green: 08/01/2005, 7555 khz (0154 UTC)

KJES

Ta Motoklada Sou Laboun: 08/03/2005, 9420 kHz (0236 UTC)

Grigoris Bithikotsis (via Foni tis Elladas)

Sullen Singing Children: 08/01/2005, 7555 kHz (0154 UTC)

KJES

Tere Liye Mere Dil Mein: 08/01/2005, 10330 kHz (0136 UTC)

Hemant Kumar & Geeta Dutt (via All India Radio)

Psalm 107: Freq/Time Unknown 2002

KJES

Ovdim Aleinu: 08/08/2005, 9345 kHz (0007 UTC)

Hagashash Hachiver (via Kol Israel)

Mere Toote Hue Dil Se: 8/8/2005, 10330 kHz (0139 UTC)

Brian Silas (via All India Radio)

Marble Index Hymn: 8/8/2005, 5810 kHz (0155 UTC)

WEWN

09/17/2005, 15505 kHz (1854 UTC)

Radio Kuwait

Daleks Fanfare: 09/17/2005, 9550 kHz (1911 UTC)

FEBA Radio

Duelling XMTRs! #2: 07/17/2005, 13800 kHz (2116 UTC)

Radio Bulgaria vs. Family Radio International

Purr and Fuzz: 07/19/2005, 15435 kHz (2121 UTC)

Radio Jordan

Go Rest High On That Mountain: 08/08/2005, 9985 kHz (0016 UTC)

WWCR

Chinese Opera: 07/31/2005, 6175 kHz (0211 UTC)

China Radio International

Mamo Marie Mamo: 08/03/2005, 5875 kHz (0052 UTC)

Ivo Papasov (via BBC)

Qu'ran Chanting II: 08/16/2005, 9935 kHz (0026 UTC)

Voice of the Islamic Republic of Iran

Na Valo Ta Metaksota: 8/16/2005, 9420 kHz (0048 UTC)

Melina Kana (via Foni tis Elladas)

Chant to Asia: 08/20/2005, 13720 kHz (0142 UTC)

Deusche Welle

Duelling XMTRs! #3: 9/15/2003, 7130 kHz (0228 UTC)

Voice of the Islamic Republic of Iran vs. the World

Saaloni el Nas: Freq/Time Unknown 2003

Fairuz (via Radio Cairo)

Nubía: 10/04/2003, 12035 kHz (0550 UTC)

Wafir (via Radio Exterior de España)

Gaytanino Horo / Dobra Dobranka: 5/14/2005, 9400 kHz (xxxx UTC)

Radio Bulgaria

Duelling XMTRs! #4: 09/29/2003, Freq/Time Unknown

Radio Tashkent vs. KA8ZXU

Freq/Time Unknown 2002

Radio Cairo

11/12/2005, 9990 kHz (1951 UTC) #1

Radio Cairo

11/12/2005, 9990 kHz (1951 UTC) #2

Radio Cairo

Wedding Melodies: 11/12/2005, 7500 kHz (2037 UTC)

Kostadin Varimezov (via Radio Bulgaria)

Bela Sum, Bela, Yunache: 11/12/2005, 5800 kHz (2054 UTC)

100 Kaba-Bagpipes (via Radio Bulgaria)

11 Sep 2009 (1906 UTC) 11955 kHz

Adventist World Radio (Hausa Service)

10 Sep 2009 (0114UTC) 5990 kHz #1

All India Radio

10 Sep 2009 (0114UTC) 5990 kHz #2

All India Radio

10 Sep 2009 (0114UTC) 5990 kHz #3

All India Radio

10 Sep 2009 (0114UTC) 5990 kHz #4

All India Radio

10 Sep 2009 (0114UTC) 5990 kHz #5

All India Radio

10 Sep 2009 (2151UTC) 9445 kHz

All India Radio

11 Sep 2009 (1351UTC) 9870 kHz #1

All India Radio (Vividh Bharati)

11 Sep 2009 (1351UTC) 9870 kHz #2

All India Radio (Vividh Bharati)

8 Sep 2009 (1706UTC) 15205 kHz #1

BSKSA Holy Quran

8 Sep 2009 (1706UTC) 15205 kHz #2

BSKSA Holy Quran

11 Sep 2009 (1540UTC) 15225 kHz

Broadcasting Service of the Kingdom of Saudi Arabia

11 Sep 2009 (1842UTC) 6973 kHz

Galei Zahal

11 Sep 2009 (1943UTC) 11875 kHz

IBRA Radio (Tamasheq Service)

11 Sep 2009 (1945UTC) 11875 kHz

IBRA Radio (Susu Service)

11 Sep 2009 (2000UTC) 11875 kHz

IBRA Radio (Zarma Service)

11 Sep 2009 (2015UTC) 11875 kHz

IBRA Radio (Hausa Service)

11 Sep 2009 (1258UTC) 1422 kHz #1

IRIB Radio Kermanshah

11 Sep 2009 (1258UTC) 1422 kHz #2

IRIB Radio Kermanshah

9 Sep 2009 (0918UTC) 13730 kHz #1

Oesterreichischer Rundfunk

9 Sep 2009 (0918UTC) 13730 kHz #2

Oesterreichishcher Rundfunk

9 Sep 2009 (0918UTC) 13730 kHz #3

Oesterreichischer Rundfunk

11 Sep 2009 (1213UTC) 15340 kHz #1

RTV Marocaine

11 Sep 2009 (1213UTC) 15340 kHz #2

RTV Marocaine

11 Sep 2009 (2103UTC) 7495 kHz

Radio Algérienne Holy Quran

12 Sep 2009 (1746UTC) 9485 kHz #1

Radio Azadliq (RFE/RL)

12 Sep 2009 (1746UTC) 9485 kHz #2

Radio Azadliq (RFE/RL)

10 Sep 2009 (2211UTC) 6200 kHz #1

Radio Bulgaria

10 Sep 2009 (2211UTC) 6200 kHz #2

Radio Bulgaria

13 Sep 2009 (2344UTC) 7400 kHz

Radio Bulgaria

8 Sep 2009 (1548UTC) 6255 kHz #1

Radio Cairo

8 Sep 2009 (1548UTC) 6255 kHz #2

Radio Cairo

11 Sep 2009 (2039UTC) 6290 kHz #1

Radio Cairo 'El-Bernameg Al-Aam'

11 Sep 2009 (2039UTC) 6290 kHz #2

Radio Cairo 'El-Bernameg Al-Aam'

8 Sep 2009 (1548UTC) 6255 kHz #1

Radio Cairo

8 Sep 2009 (1548UTC) 6255 kHz #2

Radio Cairo

13 Sep 2009 (1027UTC) 15690 kHz

Radio Farda

12 Sep 2009 (0217UTC) 171 kHz #1

Radio Mediterranee International (MEDI 1)

12 Sep 2009 (0217UTC) 171 kHz #2

Radio Mediterranee International (MEDI 1)

12 Sep 2009 (0217UTC) 171 kHz #3

Radio Mediterranee International (MEDI 1)

8 Sep 2009 (0423UTC) 171 kHz #1

Radio Mediterranee International (MEDI 1)

8 Sep 2009 (0423UTC) 171 kHz #2

Radio Mediterranee International (MEDI 1)

11 Sep 2009 (1319UTC) 12075 kHz

Radio Sweden (Russian Service)

10 Sep 2009 (0017UTC) 9345 kHz

Radio Tirana

10 Sep 2009 (1730UTC) 7225 kHz #1

Radio Tunis

10 Sep 2009 (1730UTC) 7225 kHz #2

Radio Tunis

10 Sep 2009 (1730UTC) 7225 kHz #3

Radio Tunis

11 Sep 2009 (1914UTC) 7345 kHz

Radio Tunis

12 Sep 2009 (1810UTC) 7225 kHz #1

Radio Tunis

12 Sep 2009 (1810UTC) 7225 kHz #2

Radio Tunis

13 Sep 2009 (2222UTC) 6300 kHz

Sahrawi Arab Democratic Republic National Radio

8 Sep 2009 (2209UTC) 6025 kHz #1

Voice of the Islamic Republic of Iran

8 Sep 2009 (2209UTC) 6025 kHz #2

Voice of the Islamic Republic of Iran

9 Sep 2009 (0406UTC) 11885 kHz

XMTR Test Sequence

03 Aug 2010 [1805UTC] 9755 kHz

Adventist World Radio (Bari Service)

05 Aug 2010 [1043UTC] 17510 kHz

All India Radio

09 Aug 2010 [1803UTC] 12025 kHz

All India Radio

09 Aug 2010 [2305UTC] 9470 kHz

All India Radio

10 Aug 2010 [0343UTC] 13695 kHz

All India Radio

12 Aug 2010 [0102UTC] 9870 kHz

All India Radio

03 Aug 2010 [1749UTC] 15130 kHz

All India Radio (New Delhi)

09 Aug 2010 [1758UTC] 11860 kHz

Bible Voice Broadcasting (Arabic Service)

04 Aug 2010 [2216UTC] 11820 kHz

Broadcasting Service of the Kingdom of Saudi Arabia

10 Aug 2010 [0055UTC] 1260 kHz

Broadcasting Service of the Kingdom of Saudi Arabia

14 Aug 2010 [1610UTC] 11785 kHz

Broadcasting Service of the Kingdom of Saudi Arabia

03 Aug 2010 [1905UTC] 11530 kHz #1

Dengê Mezopotamya

03 Aug 2010 [1905UTC] 11530 kHz #2

Dengê Mezopotamya

05 Aug 2010 [1309UTC] 11530 kHz #1

Dengê Mezopotamya

05 Aug 2010 [1309UTC] 11530 kHz #2

Dengê Mezopotamya

09 Aug 2010 [2044UTC] 819 kHz #1

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #2

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #3

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #4

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #5

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #6

ERTU Batra

09 Aug 2010 [2044UTC] 819 kHz #7

ERTU Batra

09 Aug 2010 [1820UTC] 12070 kHz #1

IBRA Radio (Beja Service)

09 Aug 2010 [1820UTC] 12070 kHz #2

IBRA Radio (Beja Service)

09 Aug 2010 [1820UTC] 12070 kHz #3

IBRA Radio (Beja Service)

09 Aug 2010 [1820UTC] 12070 kHz #4

IBRA Radio (Beja Service)

09 Aug 2010 [1820UTC] 12070 kHz #5

IBRA Radio (Beja Service)

11 Aug 2010 [2241UTC] 1269 kHz

IRIB Radio Iran Ardabil

10 Aug 2010 [0409UTC] 891 kHz

Radio Algérienne

03 Aug 2010 [1855UTC] 7255 kHz

Radio Belarus (German Service)

09 Aug 2010 [2259UTC] 7360 kHz

Radio Belarus (Russian Service)

03 Aug 2010 [1843UTC] 15285 kHz

Radio Cairo

12 Aug 2010 [0038UTC] 9305 kHz #1

Radio Cairo

12 Aug 2010 [0038UTC] 9305 kHz #2

Radio Cairo

09 Aug 2010 [2144UTC] 7125 kHz #1

Radio Conakry

09 Aug 2010 [2144UTC] 7125 kHz #2

Radio Conakry

09 Aug 2010 [2144UTC] 7125 kHz #3

Radio Conakry

14 Aug 2010 [0502UTC] 13730 kHz

Radio Dabanga

14 Aug 2010 [1601UTC] 11655 kHz #1

Radio Dabanga

14 Aug 2010 [1601UTC] 11655 kHz #2

Radio Dabanga

03 Aug 2010 [1918UTC] 5830 kHz

Radio Farda

08 Aug 2010 [1351UTC] 17695 kHz

Radio Farda

12 Aug 2010 [0028UTC] 1575 kHz

Radio Farda

10 Aug 2010 [0422UTC] 1449 kHz

Radio Jamahiriyah

03 Aug 2010 [2247UTC] 9575 kHz

Radio Mediterranee International (MEDI 1)

04 Aug 2010 [2247UTC] 9575 kHz #1

Radio Mediterranee International (MEDI 1)

04 Aug 2010 [2247UTC] 9575 kHz #2

Radio Mediterranee International (MEDI 1)

09 Aug 2010 [2331UTC] 9575 kHz #1

Radio Mediterranee International (MEDI 1)

09 Aug 2010 [2331UTC] 9575 kHz #2

Radio Mediterranee International (MEDI 1)

09 Aug 2010 [2331UTC] 9575 kHz #3

Radio Mediterranee International (MEDI 1)

12 Aug 2010 [0204UTC] 9575 kHz

Radio Mediterranee International (MEDI 1)

14 Aug 2010 [0442UTC[ 9740 kHz

Radio Miraya

10 Aug 2010 [0355UTC] 7200 kHz #1

Radio Omdurman

10 Aug 2010 [0355UTC] 7200 kHz #2

Radio Omdurman

04 Aug 2010 [2127UTC] 6165 kHz

Radio Tirana

09 Aug 2010 [2242UTC] 7345 kHz

Radio Tunis

11 Aug 2010 [2017UTC] 7225 kHz

Radio Tunis

10 Aug 2010 [0330UTC] 11885 kHz #1

Radio Xinjiang PBS

10 Aug 2010 [0330UTC] 11885 kHz #2

Radio Xinjiang PBS

14 Aug 2010 [1621UTC] 17745 kHz #1

Sudan Radio Service

14 Aug 2010 [1621UTC] 17745 kHz #2

Sudan Radio Service

14 Aug 2010 [1621UTC] 17745 kHz #3

Sudan Radio Service

14 Aug 2010 [1621UTC] 17745 kHz #4

Sudan Radio Service

14 Aug 2010 [1621UTC] 17745 kHz #5

Sudan Radio Service

14 Aug 2010 [1621UTC] 17745 kHz #6

Sudan Radio Service

14 Aug 2010 [1443UTC] 13765 kHz

Vatican Radio

03 Aug 2010 [1833UTC] 11850 kHz

Voice of Africa (Arabic Service)

11 Aug 2010 [1921UTC] 11600 kHz #1

Voice of Africa (Hausa Service)

Repeat Playlist OFF
Random Playlist OFF

24 March 2013 - Dubai (Al Sabkha), UAE

Walkabout During the Adhan al Maghrib

Samples & Excerpts

13 August 2010 - Dolen, Bulgaria

Lesni se Goro by Group from Satovcha Village for Authentic Dolen Singing

Samples & Excerpts

Interlude 2 (Faders) (Sound Art, 2005)

EXCERPT

Samples & Excerpts

The Ghosts of Fire Island (Documentary, KCRW, 2013)

EXCERPT

Samples & Excerpts

Reza Banki #6 (Music Cue for KCRW Documentary, 2015)

EXCERPT

Samples & Excerpts

29 August 2008 - Black Rock City, Nevada

The Green Shoes Installation by Sean O'Donoghue

Samples & Excerpts

Waves of Waves (Sound Art, 2012)

Samples & Excerpts

Portland Bill F-Type Diaphone

1993 Field Recording Restoration for Association of Lighthouse Keepers 2013

Samples & Excerpts

Baptism of Solitude (Documentary, KCRW, 2017)

EXCERPT

Samples & Excerpts

Off the Block (Theme for KCRW Investigative Series, 2016)

EXCERPT

Samples & Excerpts

9 June 2014 - Savanna, IL

Night Chorus, Mississippi Palisades State Park

Samples & Excerpts

ShortWaveMusic

Radio Ukraine International [UKR] 7440 kHz, 20-May-2005 [0200UTC] - EXCERPT

Samples & Excerpts

10 January 2012 - Sikasso, Mali

Adhan al-Fajr

Samples & Excerpts

Grand Central (For Cody Bayne's NONEXTANT Installation, 2015)

EXCERPT

Samples & Excerpts

Radio Free (Documentary, KCRW, 2016)

EXCERPT

Samples & Excerpts

3 January 2012 - Mambourke, Mali

Village Musicians and Dancers

Samples & Excerpts

ShortWaveMusic

Radio Mauritanie [MTN] 7245 kHz, 3-Jan-2012 [0005UTC] - EXCERPT

Samples & Excerpts

18 March 2013 - Qasrhir, Socotra

Nadmi bin Hammudi, Khamiss bin Suliman, Ahmed bin Mohammed, Slyiaf bin Saad, and Ghanam bin Ghareeb

Samples & Excerpts

13 January 2012 - Timbuktu, Mali

Drum and Flute Ensemble, Festival au Desert

Samples & Excerpts

Incidents in the Ether

Sequence 4 (For RRS Radio, Museo Reina Sofia Madrid, 2014)

Samples & Excerpts

Radio Station WWVH

New Station ID and UT2 Correction (7-1-1972) 0358-0400 GMT

Samples & Excerpts

Perspective (Music Cue for Unused Getty Museum Pilot, 2015)

Samples & Excerpts

15 March 2013 - Wadi Dirhor, Socotra

Wadi Night Ambience

Samples & Excerpts

22 March 2013 - Qalensiyah, Socotra

Fajr adhan

Samples & Excerpts

2 January 2012 - Diéma, Mali

Alpha Diombana (flute) and Diallo Mariam Soucko (voice)

Samples & Excerpts

ShortWaveMusic

Dengê Mezopotamya [UKR] 7540 kHz, 11-Oct-2010 [1626UTC] - EXCERPT

Samples & Excerpts

RA-1 Channel 1

Common Systems Recorded Announcement Frame (CSRA) (1991)

Samples & Excerpts

Dark Radio (Sound Art, 2007)

EXCERPT

Samples & Excerpts

ShortWaveMusic

Voice of the Islamic Republic of Iran vs. the World [IRN] 7130 kHz, 15-Sep-2003 [0228UTC] - EXCERPT

Samples & Excerpts

30 August 2017 - Black Rock City, Nevada

Gamelatron in Man Base (0507AM)

Samples & Excerpts

Mix Tapes Mix Tapes Mix Tapes (Documentary, KCRW, 2016)

EXCERPT

Samples & Excerpts

Radio Station WWV

Format Change Notification (1971)

Samples & Excerpts

Akron, NE ('AK') Radio Range

1963 Recording by Lloyd Matthiesen, Restored 2017

Samples & Excerpts

ShortWaveMusic

Broadcasting Service of the Kingdom of Saudi Arabia [ARS] 11785 kHz, 14-Aug-2010 [1610UTC] - EXCERPT

Samples & Excerpts

WAPA Radio (Sound Art, 2016)

EXCERPT

Samples & Excerpts

27 May 2016 - Maricopa, CA

Night Chorus, Hartman Camp, Sespe Wilderness

Samples & Excerpts

Incidents in the Ether

Sequence 9 (For RRS Radio, Museo Reina Sofia Madrid, 2014)

Samples & Excerpts

ShortWaveMusic

Radio Belarus, German Service [BLR] 7255 kHz, 3-Aug-2010 [1855UTC] - EXCERPT

Samples & Excerpts

Reza Banki #3 (Music Cue for KCRW Documentary, 2015)

EXCERPT

Samples & Excerpts

7 August 2010 - Koprivshtitsa, Bulgaria

Selim Demirov (zurna) and Michiel Bakkes-de Vries (tupan)

Samples & Excerpts

ShortWaveMusic

IRIB Radio Iran [IRN] 657 kHz, 17-Mar-2013 [1937UTC] - EXCERPT

Samples & Excerpts

ShortWaveMusic

Voice of the Islamic Republic of Iran [IRN] 6025 kHz, 4-Aug-2010 [2102UTC] - EXCERPT

Samples & Excerpts

One Winter's Evening, Halifax, Nova Scotia, 1975 (Sound Art, 2016)

Samples & Excerpts