If postmortem birthday parties are indicators of an individual’s fame and influence, then Johann Sebastian Bach has taken the cake ... and blown out the candles. Celebrating his 327th birthday, Bachiavellians from all over the area are coming together to host a six-hour festival of nothing but Bach. Expect to hear notable pieces such as Brandenburg Concerto No. 5, Cantata 61 and others performed by some of Nashville’s finest. At first glance, it appears that nothing could be better than this cozy blanket of baroque enshrouding a previously harsh and cultureless afternoon; however, the shining moment of this weeklong celebration is found five miles south of Bachanalia. Although it may not be a six-hour extravaganza, St. George’s Episcopal is celebrating Bach’s 327th Sunday with an equally impressive undertaking: Bach’s Mass in B minor. Written over the course of 35 years, this piece is an exemplary cross-section of Bach’s compositional influences, from his return to Weimar to the final days in Leipzig. Because of this, not only do many consider it Bach’s magnum opus, but one of the crowning achievements of the entire late baroque period.