All I could think of wasHair from the musical and Hairstyles And Attitudes by Timbuk 3.
Whatta ya got?
“Almost Cut My Hair” by David Crosby
“Get a Haircut and Get a Real Job” - George Thorogood
Does “Kooky, Kooky, lend me your comb” work?
Give me a song with hair, long beautiful hair . . .
A few off the top of my head:
Ray Stevens, The Haircut Song
Hair, from Hair, the musical
Kodi LaCroix, Facial Hair
“Signs” by Five Man Electrical Band (“And the sign said long-haired freaky people need not apply”).
“Sister Golden Hair” by America.
Not that he does, but there is no way under Heaven that Will Smith can deny that child is his. 
The spoken introduction to the live version of “Must of Got Lost” by J. Geils Band that I hear most often (“Hey Reputa the Beautah, flip me down your hair”)
Devil’s Haircut by Beck.
I dream of Jeannie with her light brown hair. By Bugs Bunny (or probably some old person before that).
Good one!
Great choices all!
Thanks.