I hear music but there’s no one there

The coolest thing happened yesterday.  John and I were walking back from dinner out, heading to the garage to pick up his car and move it back to our block.  It was pretty quiet, not a lot of traffic, not a lot of noise (it was a Sunday evening).  We probably heard something in the background, but we weren’t really aware of it until it jumped out and slapped us in the head.  Seemingly out of nowhere, we heard this CHORD, a chorus of voices singing.  It was loud, it was good, and where the hell was it coming from?  We stopped in our tracks, heads swiveled left, and then we were across the street, following our ears to track down the music.  (We probably looked cartoonish, we moved that fast.  Left a cloud of dust behind us.)  Within a block, it was clear there was a gospel choir around here somewhere, and two blocks away and around one corner, we found them.  A group of maybe 8 or 9 men and women were arranged in an outdoor park in front of a band, singing their heads off.  It was really cool.  There were some chairs arranged in front, maybe 30-40 people in the audience, and a Mr. Brain Freeze truck at the curb (who would have been doing better business if this August actually felt like August).  We hung out for maybe 20 minutes, until the good choir took a break, and a not as good choir stepped up.  I overheard someone explaining that there’s music in this park every other week, gospel on Sundays, jazz on Thursdays. I imagine we’ll be back there again before it gets cold.  Yay for walking places!  We would never have heard this if we’d been driving home from dinner.  Or if we’d heard it, we probably almost certainly wouldn’t have driven around looking for it.