ECMから販売されているWATT/XtraWATT/JCOA（いずれもカーラ・ブレイとマイケル・マントラーが主宰）のディスコグラフィーと保有状況をまとめた。
WATT/XtraWATTはレコードが全て集まった。当初、WATT/JCOAは独立レーベル。だから初期のものは米盤がオリジナル。WATT11から自主レーベルでの販売は止めて、米国でもECMと提携していたワーナーに販売を任せている。初期には欧州盤でもVirginがあったり、ややこしい。基本は米オリジナルかECMで揃えた。
WATT 12 1/2 というアルバムがあることに注意。
[WATT series]
Tropic Appetites, Carla Bley, 1974, WATT 1 [米LP]
No Answer, Michael Mantler, 1974, WATT 2[米LP]
13 For Piano And Two Orchestras / 3/4 For Piano And Orchestra, Michael Mantler / Carla Bley, 1975, WATT 3 [米LP]
The Hapless Child, Michael Mantler / Edward Gorey, 1976, WATT 4[LP]
Silence, Michael Mantler, 1977, WATT 5 [LP]
Dinner Music, Carla Bley, 1977, WATT 6 [LP/JPN][LP]
Movies, Michael Mantler, 1977, WATT 7[LP]
European Tour 1977, The Carla Bley Band, 1978, WATT 8[LP]
Musique Mecanique, The Carla Bley Band, 1979, WATT 9[米LP]
More Movies, Michael Mantler, 19??, WATT 10 [米LP]
Social Studies, Carla Bley, 1981, WATT 11 [LP]
Live!, Carla Bley, 1982, WATT 12 [LP]
I Hate To Sing, Carla Bley, 1984, WATT 12 1/2 [LP]
Something There, Michael Mantler, 1982, WATT 13[LP]
Heavy Heart, Carla Bley, 1984, WATT 14[LP][CD]
Alien, Michael Mantler, 1985, WATT 15[LP]
Night-Glo, Carla Bley, 1985, WATT 16 [LP]
Sextet, Carla Bley, 1987, WATT 17[LP][CD]
Live, Michael Mantler, 1987, WATT 18 [LP]
Many Have No Speech, Michael Mantler, 1987, WATT 19[LP]
Duets, Carla Bley / Steve Swallow, 1988, WATT 20 [LP][CD]
Fleur Carnivore, Carla Bley, 1989, WATT 21[LP]
*The WATT Works Family Album, 1990, WATT 22
The Very Big Carla Bley Band, Carla Bley, 1991, WATT 23[LP]
*Go Together, Carla Bley / Steve Swallow, 1993, WATT 24 [CD]
*Big Band Theory, Carla Bley, 1993, WATT 25
*Songs With Legs, Carla Bley / Andy Sheppard / Steve Swallow, 1994, WATT 26
*Goes to Church, The Carla Bley Big Band, 1996, WATT 27
*Fancy Chamber Music, Carla Bley, 1997, WATT 28
*Are We There Yet?, Carla Bley / Steve Swallow, 1999, WATT 29 [LP]
*4x4, Carla Bley, 2000, WATT 30
*Looking For America, Carla Bley Big Band, 2002, WATT 31
*The Lost Chords, Carla Bley, 2004, WATT 32
*Appearing Nightly, Carla Bley Big Band, 2006, WATT 33
*The Lost Chords find Paolo Fresu, Carla Bley, 2007, WATT 34
*Carla's Christmas Carols, Carla Bley / Steve Swallow / The Partyka Brass Quintet, 2009, WATT 35
私は歌うのが嫌い、ってアルバムがWATT 12 1/2 
[XtraWATT series]
I Can't Stand Another Night Alone (In Bed With You), Steve Weisberg, 1986, XtraWATT 1 [LP]
Carla, Steve Swallow, 1988, XtraWATT 2 [LP]
My Cat Arnold, Karen Mantler, 1989, XtraWATT 3 [LP]
Plays The Music Of Carla Bley, Orchestra Jazz Siciliana, 1990, XtraWATT 4[LP]
Karen Mantler And Her Cat Arnold: Get The Flu, Karen Mantler, 1990, XtraWATT 5[LP]
Swallow, Steve Swallow, 1992, XtraWATT 6 [LP]
*Real Book, Steve Swallow, 1994, XtraWATT 7
*Farewell, Karen Mantler, 1996, XtraWATT 8
*Deconstructed, Steve Swallow, 1997, XtraWATT 9
*Always Pack Your Uniform On Top, Steve Swallow, 2000, XtraWATT 10
*Damaged in Transit, Steve Swallow, 2003, XtraWATT 11
*So There, Steve Swallow with Robert Creeley, 2006, XtraWATT 12 [CD]
*INTO THE WOODWORK, STEVE SWALLOW QUINTET, 2013, XtraWatt 13
*BUSINESS IS BAD, KAREN MANTLER, 2014, XtraWatt 14
*はCDのみ
これはレコード時代末期の箱物。
[JCOA]
The Jazz Composer's Orchestra, The Jazz Composer's Orchestra, 1968, JCOA 1001/2[米LP]
Escalator over the Hill, Carla Bley / Paul Haines, 1971, EOTH (JCOA 1003/5)[米LP]
Relativity Suite, Don Cherry / The Jazz Composer's Orchestra, 1973, JCOA 1006[米LP]
Plays Numatik Swing Band, Roswell Rudd / The Jazz Composer's Orchestra, 1973, JCOA 1007[米LP]
The Gardens Of Harlem, Clifford Thornton / The Jazz Composer's Orchestra, 1974, JCOA 1008
Echoes Of Prayer, Grachan Moncur III / The Jazz Composer's Orchestra, 1975, JCOA 1009
For Players Only, Leroy Jenkins / The Jazz Composer's Orchestra, 1975, JCOA 1010
