When the BB started recording Surfin' Safari, they had already recorded some pretty good ballads. Lonely Sea, Lavender, Their Hearts Were Full Of Spring and the first version of Surfer Girl. All pretty good stuff. Why didn't any of these songs make the album while songs like 'Cuckoo Clock' and 'Heads You Win' did?
It was a dumb move. Maybe Brian or Nik thought it would go against their image.