Director Frederick E. Harris Jr. hops during a crescendo near the end of “Somethin’ Sassy,” by Hal Crook. The MIT Festival Jazz Ensemble performed a concert on Saturday, Nov. 17, titled “Celebrating Boston Jazz & the Music of Charlie Kohlhase.” Omari Stephens—The TEch May. 9, 2016 Facebook Twitter Reddit Print Director Frederick E. Harris Jr. hops during a crescendo near the end of “Somethin’ Sassy,” by Hal Crook. The MIT Festival Jazz Ensemble performed a concert on Saturday, Nov. 17, titled “Celebrating Boston Jazz & the Music of Charlie Kohlhase.” Omari Stephens—The TEch