Late night music, July 20-25: Ginuwine, Demi Lovato, and more (+ video of Grizzly Bear on Letterman)

A weekly bulletin on musical guests playing late night TV; set your TIVOs or DVRs if you’ve got an early bedtime.

The Late Show with David Letterman, CBS

Monday, July 20: Spinnerette (the alt rock foursome featuring Brody Dalle and Tony Bevilacqua, both formerly of The Distillers; the band just released their self-titled debut in June)

Tuesday, July 21: the Flatlanders

Wednesday, July 22: Diane Birch

Thursday, July 23: Ginuwine (pictured) with Missy Elliott (They'll likely perform “Get Involved,” the second single from Ginuwine’s latest album, A Man’s Thoughts. The song also features Timbaland — he produced it — but he's not scheduled to appear.)

Friday, July 24: Judy Collins