Tyree Glenn, who had the unusual double of trombone and vibes, was an important asset at various times to both Duke Ellington and Louis Armstrong. Glenn started out working in territory bands in Virginia, then moved to the West Coast, playing with groups headed by Charlie Echols (1936) and Eddie Barefield. After playing with Ethel Waters and Benny Carter, he became a longtime member of the Cab Calloway Orchestra (1939-1946). Glenn visited Europe with Don Redman's big band (1946). During his association with Ellington (1947-1951), he was an effective wah-wah trombonist in the T...