The track was refined with remixing and additional parts added on 20 January and 3 February. During the latter session, McCartney and Starr re-recorded their contributions on bass guitar and drums, respectively. Starr later highlighted his fills on the song as typical of an approach whereby "I try to become an instrument; play the mood of the song. For example, 'Four thousand holes in Blackburn, Lancashire,' – boom ba bom. I try to show that; the disenchanting mood." As on the 1966 track "Rain", music journalist Ben Edmonds recognises Starr's playing as reflective of his empathy with Lennon's songwriting. In Edmonds' description, the drumming on "A Day in the Life" "embod psychedelic driftmysterious, surprising, without losing sight of its rhythmic role".