Bach and Jesus go together like Martha Stewart and a clean kitchen -- it's all about inspiration. Bach, not unlike, say ... Amy Grant, wrote his best stuff to celebrate his love of da Lawd. The performances in the Bach at the Sem series take place at Concordia Seminary (801 DeMun Avenue), where everybody's busy lovin' da Lawd, and so they kick up their Bach a notch (sorry). The musicians and vocalists of American Kantorei perform Bach's Passion According to St. Matthew at 7 p.m. Sunday (part 1) and today (part 2). Call 314-505-7370 for more on the free concert, Bach-door man.