 Complete the following phrase:  The B-side of the single, Rainclouds, was written by McCartney and Denny Laine, though on early pressings of the single the song was credited only to McCartney. According to authors Chip Madinger and Mark Easter, Rainclouds is perhaps most notorious as the track that McCartney worked on during 9 December 1980, straight after hearing that John Lennon had been 