Portrait of Jack Johnson presents musical profiles of three boxing champs. All of them had connections to Chicago. And all of them could drop a bass line as fast as they could an opponent. Local jazz musician Karl E.H. Seigfried recently talked to Alison Cuddy about his interest in the boxer-bassist double-threat. He was joined by saxophonist Fred Jackson, Jr. and drummer Dave Williams. [audio:/sites/default/files/archives/music/2010/07/848_20100730e1.mp3|titles=Boxer Musicians] Seigfried stuck around to talk about the influence that late jazz saxman and club owner Fred Anderson had on him, and many other musicians. Seigfried also performs “Mr. Anderson,” a solo bass tribute to the jazz legend. [audio:/sites/default/files/archives/music/2010/08/848_20100730f1.mp3|titles=Tribute to Fred Anderson]