Matty (Julian Clifton) Matlock (27 April 1907-14 June 1978) was an American Dixieland jazz clarinettist, saxophonist and arranger born in Paducah, Kentucky. From 1929-1934 Matlock replaced Benny Goodman in the Ben Pollack band doing arrangements and performing on clarinet. From 1935-1942, after a falling out with Pollack, Matty began playing on clarinet with Bob Crosby. Wikipedia
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