I'm sorry to hear this. What a life and career. The first time I met Dr. Lonnie Smith, he was playing with Lou Donaldson at The Firefly Club in Ann Arbor, MI. As a 20 something year old kid, I didn't really understand how the bass pedals were used in jazz organ playing and Dr. Lonnie set me straight. I worked up the courage to go talk to him after the gig and he sat me right down on the bench and showed me the technique. I got to meet Lou then, too. He was a sweet, gentle man with a wicked sense of humor, which is reflected in his music.
I love so many of those Blue Note organ records he did. Alligator Boogaloo. Mr Shing-a-Ling, Good Gracious!, Midnight Creeper, Natural Soul, etc. What a legend.