Baby’s Heartbeat is a recording of the heartbeat of John Lennon and Yoko Ono’s son John Ono Lennon II. The recording was made by John Lennon and Yoko Ono at Queen Charlotte’s Hospital in London in 1968. John Lennon and Yoko Ono can be heard talking at the beginning of the track. The recording was produced by John Lennon and Yoko Ono and was released on their 1969 album Unfinished Music No. 2: Life With The Lions. The piece was followed by Two Minutes Silence in honour of John Ono Lennon II who passed away when Yoko Ono suffered a miscarriage.