 A disagreement between McCartney and his bandmates nevertheless resulted in McCartney walking out of the studio during the final session, for Lennon's "She Said She Said", on 21 June, two days before the band were due to fly to West Germany for the first leg of their world tour.The Beatles spent over 220 hours recording "Revolver" – a figure that excludes mixing sessions, and compares with less than 80 hours for "Rubber Soul".Final mixing of the album took place on 22 June.