Paul McCartney has revealed that "Being for the Benefit of Mr Kite!", from the Beatles' 1967 album Sgt. Pepper's Lonely Hearts Club Band, remains one of the trickiest songs for him to perform, largely due to its unusually complex bassline. Despite being widely regarded as one of the greatest and most technically gifted musicians of his generation, McCartney has openly admitted the track's demands, highlighting how even a musician of his calibre can find certain compositions genuinely challenging decades on.

McCartney has called the song's bassline his favourite to play precisely because of its difficulty, noting how tough it is to sing and play bass simultaneously given the conflicting movements required. The song's angular structure, syncopation, carnival-like feel and shifts away from a straightforward 4/4 time signature make it stand out among the Beatles' catalogue. Notably, the group never performed it live, and McCartney only added it to his solo setlists in 2013, describing it to Rolling Stone as a "crazy, oddball song" that remains genuinely hard to execute.