TheSingingMixer: I think this is my 4th #acapellaapp version of #Summertime, and this swinging #jazzband #cover by @ryosuke-bass is well worth the #collab. I snuck in this satisfying #carseatserenade before work. If you want to #joinmycollab, there are 3 open spots & if you want to #takethelead, that's totally cool, too. It's really fun to #jamwiththeband! #tsm