After eleven years, he’s back. The wittiest man in classical music, Peter Schickele, returns with PDQ Bach: Jekyll and Hyde. The program features songs and rounds by the man of mystery, including the notorious rock and roll settings of famous Shakespeare speeches (as heard in the composer’s solo song programs as well as on Garrison Keillor’s A Prairie Home Companion), as well as even more music by P.D.Q. Bach, including the musical recipe PDQ 3-Step Crab Dinner. Rounding out this mad scene is the recently-discovered Four Next-to-Last Songs. (Amanda Sweet)