What's four times spookier than watching the Grim Reaper perform a Vivaldi recorder concerto? Watching four Grim Reapers perform a Vivaldi recorder concerto. Here's the early music ensemble Red Priest's dressed-up performance of Vivaldi's Recorder concerto in G minor, RV 439. This concerto's nickname, "La notte," calls to mind all kinds of things that go bump in the night. Um, is that a cello bow or a scythe?