かつては2枚組LPで4曲だけだった。2枚組CDを購入したら8曲と倍増。録音期間は1969年11月19日から72年6月12日。ただし、7曲が69年11月から70年2月の4か月間に集中している。アルバムBitches Brewの録音が69年8月なので、その3か月後に数多くのミュージシャンを集めてセッションを開始したことになる。だが、アルバムBig Funが発売されたのは74年4月19日。
この時期のスタジオ録音アルバムは、Jack Johnson（録音：70年2, 4月、発売：71年2月）とLive Evil（録音：70年2, 5, 6, 12月、発売：71年11月）。つまり、Big Funの音源は置き去られてしまったことになる。マイルスが演奏自体に納得しなかったのか、レコード会社に何らかの戦略があったのか。Bitches Brewの発売は70年3月で、その売り上げを伸ばすために踏み止まったとも考えられるのだが、70年6月のフィルモア・イーストでのライブアルバムAt Fillmoreは、70年10月に発売。いまだに謎のBig Fun（すっごいお楽しみ）なのである。
Disc 1
1. Great Expectations
2. Ife
3. Recollections
4. Trevere
Disc 2
5. Go Ahead John
6. Lonely Fire
7. The Little Blue Frog
8. Yaphet
Track 1
Miles Davis - trumpet / Steve Grossman - soprano saxophone / Bennie Maupin - bass clarinet
Chick Corea, Herbie Hancock - electric piano / John McLaughlin - electric guitar
Ron Carter - double bass / Harvey Brooks - Fender bass guitar
Billy Cobham - drums / Airto Moreira - percussion
Khalil Balakrishna - electric sitar / Bihari Sharima - tabla, tamboura
Recorded on November 19, 1969 at Columbia Studios, Studio E, NYC.
Track 2
Miles Davis - electric trumpet with wah wah / Carlos Garnett - soprano saxophone
Sonny Fortune - soprano saxophone, flute / Bennie Maupin - clarinet, flute
Lonnie Liston Smith, Harold I. Williams, Jr. - piano
Michael Henderson - electric bass / Al Foster, Billy Hart - drums / James Mtume - African percussion
Badal Roy - tabla
Recorded on June 12, 1972 at Columbia Studios, Studio E, NYC.
Track 3
Miles Davis - trumpet / Wayne Shorter - soprano saxophone / Bennie Maupin - bass clarinet
Joe Zawinul - electric piano (left) / Chick Corea - electric piano (right)
John McLaughlin - guitar / Dave Holland - electric bass guitar / Billy Cobham - triangle
Jack DeJohnette - drums / Airto Moreira - cuíca, percussion
Recorded on February 6, 1970 at Columbia Studios, Studio B, NYC.
Track 4
Miles Davis - trumpet / Steve Grossman - soprano saxophone / Bennie Maupin - bass clarinet
Chick Corea - electric piano / Larry Young - organ, celeste
Khalil Balakrishna - electric sitar / Bihari Sharima - tamboura
Harvey Brooks - electric bass guitar / Dave Holland - double bass
Jack DeJohnette - drums / Billy Cobham - drums / Airto Moreira - cuíca, berimbau
Recorded on November 28, 1969 at Columbia Studios, Studio E, NYC.
Track 5
Miles Davis - trumpet / Steve Grossman - soprano saxophone
John McLaughlin - electric guitar / Dave Holland - electric bass guitar / Jack DeJohnette - drums
Recorded on March 3, 1970 at Columbia Studios, Studio E, NYC.
Track 6
Miles Davis - trumpet / Wayne Shorter - tenor saxophone / Bennie Maupin - bass clarinet
Chick Corea - electric piano / Joe Zawinul - electric piano, Farfisa organ
Dave Holland - double bass / Harvey Brooks - Fender bass guitar
Billy Cobham, Jack DeJohnette - drums
Airto Moreira - indian instruments, percussion / Khalil Balakrishna - sitar, Indian instruments
Recorded on January 27, 1970 at Columbia Studios, Studio B, NYC.
Track 7
Miles Davis - trumpet / Steve Grossman - soprano saxophone / Bennie Maupin – bass clarinet
Chick Corea - electric piano / Larry Young - organ, celeste
John McLaughlin - guitar / Khalil Balakrishna - electric sitar / Bihari Sharima - tamboura
Harvey Brooks - electric bass guitar / Dave Holland - double bass
Jack DeJohnette - drums / Billy Cobham - drums / Airto Moreira - cuíca, berimbau
Recorded on November 28, 1969 at Columbia Studios, Studio E, NYC.
Track 8
Miles Davis - trumpet / Steve Grossman - soprano saxophone / Bennie Maupin - bass clarinet
Herbie Hancock - electric piano (left) / Chick Corea - electric piano (right)
John McLaughlin - guitar / Khalil Balakrishna - electric sitar / Bihari Sharima – tamboura, tabla
Harvey Brooks - electric bass guitar / Ron Carter - double bass
Billy Cobham - drums, triangle / Airto Moreira - cuíca, berimbau
Recorded on November 19, 1969 at Columbia Studios, Studio E, NYC.
