a recorder? outside? 2:30 am? seriously?

i swear it sounds like someone is playing a recorder outside my apartment building in the middle of the night in the middle of winter. but its just three notes, which makes me think perhaps someone got a mildly annoying new windchime of sort. or just doesnt know how to play the recorder.

while i type this, i have two recorders within reach which i am tempted to grab, stick my head out the sliding door, and start a'tootin' on just for kicks.