I have a friend who has perfect pitch. He is blind. You can hit any chord, or even dis-chord and he can immediately tell you every note. He remembers and recognizes phone numbers by the pitch of the beeps.
He is also a wonderful musician and vocalist. He plays keyboard, clarinet, sax, flute, harmonica and BAGBIPES, all equally well.
He no longer plays music for a living but now works as a computer troubleshooter. His music is now dedicated to church services, and he is also an ordained minister.
He has two brothers, also blind, and they all have perfect pitch. His sister, who is not blind, can't sing a note on key.
DonM