Kanye West dropped by “Fallon” last night to perform the “Yeezus” track “Bound 2”!

+ Watch Kanye West perform “Bound 2” with The Roots and Charlie Wilson during last night’s “Late Night With Jimmy Fallon.” ‘Ye was a surprise addition to the night’s line-up, with Fallon tweeting the announcement just a few hours before broadcast. (Pitchfork)

+ Miley Cyrus can now add rapping experience to her résumé thanks to a guest spot on Mike WiLL Made It‘s “23.” Listen to the track, which also features Wiz Khalifa and Juicy J. (Just Jared)

+ And in more numerically titled song news, check out a demo of Avril Lavigne‘s “17” off of her upcoming eponymous fifth album, due Nov. 5. (Idolator)

+ Back to Miley! The “Wrecking Ball” singer is slated to host and be the musical guest on the Oct. 5 episode of “Saturday Night Live.” One week prior on Sept. 28, musical guests Arcade Fire will kick off the season with host Tina Fey, and Katy Perry will perform on Oct. 12. (MTV News)

+ Last bit o’ Miley, we swear! After her Smilers clocked 12.3-million views on “Wrecking Ball,” breaking the Vevo record for most views in a clip’s first 24 hours, Miley tweeted out the official Bangerz track list. The 13-song set features Britney Spears on “SMS (Bangerz),” Nelly on “4×4,” Big Sean on “Love, Money, Party,” French Montana on “FU,” and Future on “My Darlin’.” (MTV News)

+ Demi Lovato has written “Staying Strong,” a motivational book of 365 quotes and personal insights that will be released on Nov. 19. “I’m a firm believer of starting the day right with an inspirational quote and sort of a morning meditation,” she explains. (MTV News)

+ Watch Lorde‘s killer, NSFW cover of Kanye West’s “Hold My Liquor,” which she performed live during New Zealand’s iHeart Radio Festival on Sunday. (Idolator)

+ The good news: The Wanted have shared the cover for Word Of Mouth. The bad news: the album has been pushed back from its original Sept. release date to Nov. 4. (MTV News)

Photo credit: Lloyd Bishop/ NBC