Dr. Lonnie Smith was considered one of the greatest Hammond organists ever. He began playing with jazz guitarist George Benson in the mid-1960s before recording his first solo album, “Finger Lickin’ Good Soul Organ,” in 1967. That same year, he performed on Lou Donaldson’s hit record “Alligator Boogaloo,” the first of many collaborations with Donaldson. Smith went on to work with artists including Marvin Gaye and Etta James in addition to leading his own band.