10 Best Duets Ever: No. 6
'Some Velvet Morning'
--Nancy Sinatra and Lee Hazlewood (1967)
Wading into deep waters (by Nancy Sinatra standards), Hazlewood's psychedelic composition weaves references to sex, drugs, daffodils and Greek mythology into a baroque, incomprehensible masterpiece that's as cool as it is strange. The oblique dialogue between a man and an ethereal angel/lover/wood nymph has had rock fans scratching their heads for decades.