After last week's Foo Fighters overload, Letterman took the week off, but the other shows picked up the slack this week with another collection of strong musical acts bringing tunes to the world of late night.

With 1989 just a few days away, Taylor Swift is in full-on promo mode and Taylor Swift-ing all over the place, which included this performance on Jimmy Kimmel Live.

Neil Diamond is making the rounds to plug his latest, Melody Road, and you can enter for a chance to win a copy of the album from your pals at AllMusic, plus a "Neil F**kin' Diamond" t-shirt.

Tenacious D promoted this weekend's Festival Supreme by digging back to a track from their short-lived but much-revered '90s HBO show.

Gavin Rossdale, along with the guy who played drums on the old records and a few other dudes rounded out the Bush lineup for a performance on Kimmel.

Hard-hitting British blues rock duo Royal Blood delivered a track from their self-titled debut on Late Night With Seth Meyers.

Texas-based five-piece vocal group Pentatonix won The Sing-Off in 2011. They stopped by Conan to perform a track from last month's PTX, Vol. 3.