If you happened to be a fan of the jazz organ sound in the mid-1960s, you knew exactly what to expect when you stepped into a club – greasy blues, ballads and jazz warhorses played at racecar tempos. Unity changed that. In one elegant stroke. All by itself. 50 years ago on November 10, 1965, organist Larry Young headed into Rudy Van Gelder’s studio with saxophonist Joe Henderson, trumpeter Woody Shaw & drummer Elvin Jones to record his magnum opus.