Happy Bird was one of the first Charlie Parker albums I ever bought. Got it from a stand on Liverpool Street station (London, UK) which sold budget records such as MFP, Allegro, Saga and Charlie Parker Records at ten shillings or twelve shillings and sixpence each. Got this one, Bird Lives, a five volume set of live shots on Saga including the Massey Hall concert and some Lester Young air shots as well. Would have been around 1964. Happy days!!!
Got Happy Bird on CD as well quite cheaply from an Amazon marketplace dealer.
I always thought that Bird seemed a bit subdued but Wardell Gray was cooking.