Following a highly successful small-group jazz concert at New York Town Hall on May 17, 1947, featuring Armstrong with trombonist/singer Jack Teagarden, Armstrong's manager, Joe Glaser dissolved the Armstrong big band on August 13, 1947, and established a six-piece traditional jazz group featuring Armstrong with (initially) Teagarden, Earl Hines and other top swing and Dixieland musicians, most of whom were previously leaders of big bands. The new group was announced at the opening of Billy Berg's Supper Club.