I always loved Cannonball's sound. Who knows any particulars about his mouthpiece/reed combination? Was it set up for low/med/or high resistance? Thoughts?.....
Cannonball used a small tip opening mouthpiece (Meyer 5) with a relatively soft reed (LaVoz medium). Try the setup, you can get the same "vibe" somewhat. I'm fairly certain he had almost no resistance in his sound. His sound for some reason to me resonates as "big band" lead alto (lol?) in the most positive way, something about his tone, round but edgy, full and crisp articulation. Of course, he practiced like a beast, shedding Klose, various method books, etc.. and of course playing/teaching, someone very dedicated, and having a positive attitude even while under the influence of drugs at different points of his career. some recordings he can sound a little different. Some people called him the "soulful technician" a player with an incredible amount of soul in his playing, with his impeccable technique behind it.