"Heartbeat (Tainai Kaiki II) – Returning to the Womb" is a song resulting from the collaboration between Ryuichi Sakamoto and David Sylvian,[1] with music co-written by Arto Lindsay. It features vocals by Ingrid Chavez and spoken word by John Cage.[2] The mini-album containing the track was released in 1992 and features a previous collaboration between Sakamoto and Sylvian, the 1984 re-recording of "Forbidden Colours", produced by Steve Nye, that was the B-side to Sylvian's single "Red Guitar" and features as a bonus track on his 1987 album Secrets of the Beehive.

ReleasedJune 1, 1992 (1992-06-01)
Length5:19
Quick facts from the album, B-side ...
| "Heartbeat (Tainai Kaiki II) – Returning to the Womb" |
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| B-side | "Nuages" |
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| Released | June 1, 1992 (1992-06-01) |
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| Genre | Art rock |
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| Length | 5:19 |
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| Label | Virgin |
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| Songwriters | Arto Lindsay, Ryuichi Sakamoto, David Sylvian |
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| Producers | Ryuichi Sakamoto, David Sylvian |
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"Field Work" (1986) |
"Heartbeat (Tainai Kaiki II) – Returning to the Womb" (1992) |
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The song can be found on Sakamoto's album Heartbeat,[3] in different versions depending on the issue as well as in Sylvian's compilation A Victim of Stars 1982–2012 (CD 1).