Grapefruit was a London-based band, brought together by Terry Doran of Apple Publishing, the music publishing company started and owned by the Beatles. The band was formed late 1967 and was given its name by John Lennon. In January 1968, John Lennon and Paul McCartney produced one of their songs, “Lullaby”. And on this day, Paul McCartney directed a promo film for one of their upcoming songs.
From The Beatles Monthly Book, N°58, May 1968:
The Beatles’ protege group, “Grapefruit”, have just released their new single “Elevator”. Paul decided that they should make a special film to promote the record on television, so, he took “Grapefruit” into Hyde Park and directed them in a three-minute sequence.
Loads of people came up with the usual reaction on seeing Paul – “Is it? – No, it can’t be! Yes, I’m sure it is”, etc. Eventually, about 50 fans cornered him around the Albert Memorial, so Paul gave in and signed some autographs.