You're a Big Boy Now (released in 1967) is a soundtrack album by The Lovin' Spoonful. It contains some songs from the Francis Ford Coppola movie of the same name. Both "You're a Big Boy Now" and "Darling Be Home Soon" … see full wiki
#16 hit single by by Simon and Garfunkel in 1967
#1 hit single by The Byrds in 1965.
#1 (3 weeks) hit single by The Byrds in 1965.
#1 hit single by Barry McGuire in 1965