Billboard Bits serves up the best bite-sized nuggets of music news and gossip.

Justin Bieber Caught Making Out in Backseat

Justin Bieber was photographed making out with a girl in the backseat of a Honda while in Venice, Ca. earlier this month. The pop star was apparently kissing 16-year-old Jasmine Villegas, who is currently opening for Bieber on his tour. (TMZ)

Bruno Mars-Damian Marley Collaboration Leaked Online

"Liquor Store Blues," a new track from Bruno Mars' debut album "Doo-Wops & Hooligans" featuring reggae singer Damian Marley, hit the web today. The song, which finds Mars singing that he'll "get messed up today/I'll be okay tomorrow," arrives after Mars' arrest for cocaine possession on Sunday (Sept. 19). (RapRadar)

Steven Tyler to Release Solo Song

Aerosmith's Steven Tyler will release a solo single called "Love Lives," which will serve as the theme for the upcoming Japanese movie "Space Battleship Yamato." Tyler, who penned the track after viewing the film's final battle scene, will release it in piano, instrumental and acoustic versions on Nov. 24. (Spinner.com)

Amy Winehouse Apologizes to Mark Ronson via Twitter

After dissing her former producer and collaborator via Twitter on Friday, Amy Winehouse used her account to apologize earlier today. She Tweeted: "Ronson I love you; that make it better? You know I love you." In an interview with the BBC today, Ronson admitted that working on Winehouse's "Back to Black" album certainly increased his popularity, as Winehouse claimed in her initial Tweet. (BBC)

50 Cent and Kanye May Join Forces for European Tour

The supposed beef between 50 Cent and Kanye West is more fiction than fact these days, according to DJ Whoo Kid, who is associated with 50 Cent's "G-Unit" "[50 and Kanye] have been talking about working together since a couple months ago-we all roll out together in a Euro tour," DJ Whoo Kid told VIBE.

Buddy Guy Announces Release of 'Living Proof'

Legendary blues guitarist Buddy Guy will release new album "Living Proof" on Oct. 26 via Silvertone/Jive, with guest spots by B.B King and Carlos Santana. Guy recently filmed a video for "Stay Around A Little Longer" in Las Vegas with King, and is on tour through the U.S. with fellow guitar virtuoso Jonny Lang.

(Reporting by Jason Lipshutz, Jillian Mapes and Walter Frazier)