For years he’s entertained us on the radio and TV. He hosts the Geator’s Rock and Roll Rhythm & Blues Express every Saturday night on WXPN at 6 p.m. for an hour of radio that a cat like only The Geator can pull off in his inimitable way. Tonight at 7:30pm, the legendary Boss With The Hot Sauce, The Geator With The Heater, Jerry Blavat will appear at the Free Library of Philadelphia to speak about his new book You Only Rock Once: My Life In Music. The Geator will be interviewed by music journalist and musician Tom Moon. The event is free and open to the public; click here for more information.