Coming from the bebop school of Charlie Parker, he also formed his own sound and identity playing with great cats like Miles Davis (he had only played 4 years when he started playing Miles!), Art Blakey, and Charles Mingus. His early years after playing with Miles and others helped forged the sound that's known as hard bop, along with many other hard bop artistes such as Art Blakey. Of course, he eventually expanded his sound into more freer forms of jazz and integrated the influences of modal jazz with free jazz into his own distinctive hardbop sound.
I've got some of his albums including Nature Boy (Blue Note, 2000), Vertigo (Blue Note, 1962, 63 - reissued), Hat Trick (Blue Note, 1996), The Jackie Mac Attack Live (Verve, 1991), Bluesnik (Blue Note, 1961), and Jackie's Bag (Blue Note, 1959). I will be getting more soon.
Rest in peace, Jackie Mac. I wished I had the chance to meet and know you! My prayers are with you.
May 17, 1932 - March 31, 2006