You know what? rhobike has the absolutely best ideas. We're going to this DIY singalong of Bach's B Minor Mass (BWV 232) on Tuesday evening in Oak Park. I checked the score out of the Reg, and I'm slowly listening through it on YouTube. I've just gotten through the "Gloria in excelsis," and I'm giving the "Et in terra pax" a bit of time to load. But I can already going to tell that this is going to be an epically cool thing to do.