WATCH: Imagine Dragons Premieres 'Radioactive' Video, Announces Headline Tour

Imagine Dragons, coming off a successful breakout year, has announced a 2013 headline tour to support their debut album Night Visions. The band kickoff a lofty number of North American stops, starting in Arizona on Feb. 8. The Las Vegas-born outfit will perform in Sin City on the 9th, followed by most major markets, including Dallas, Atlanta, New York, Chicago, Vancouver and Los Angeles.

WATCH: Big Boi & Little Dragon Perform 'Mama Told Me' on 'Jimmy Fallon'

While their version of "Mama Told Me" didn't make his upcoming album Vicious Lies and Dangerous Rumors, that didn't stop Big Boi from bringing Little Dragon out to perform the track Friday on Late Night with Jimmy Fallon. Of course, the band still appears on three of the tracks off VLADR: “Thom Pettie” and “Descending,” as well as deluxe edition track “Higher Res."

WATCH: POP ETC.'s Video For 'Speak Up'

POP ETC. has released new visuals for their track "Speak Up" off The Twilight Saga: Breaking Dawn - Part 2 soundtrack. The new video combines footage from the blockbuster film with clips of the band playing while on a sunset sail.

WATCH: Kanye West Joins Big Sean in Detroit For 'Clique'

It's only been a few hours since Big Sean headlined his first arena show in his hometown of Detroit, but it was certainly one for the books. Sean took over the downtown venue The Palace, unloading more than 20 songs with guest appearances from Pusha T, Common, J. Cole, Mike Posner and more. The 8,000-plus [sold out] venue was sold out absolutely lost it when Kanye West appeared for "Clique" during the encore.

WATCH: Florence Welch Joins The Rolling Stones in London

Florence Welch has had some interesting collaborations in her career, but an appearance with The Rolling Stones definitely scores big points for the singer. She made a surprise guest spot this week during the band's 50th anniversary show in London. Watch fan footage of the Welch trading vocals with Mick Jagger for "Gimme Shelter" below:

WATCH: Tegan and Sara Perform 'Closer' on 'Letterman'

Ahead of their seventh album Heartthrob, sister duo Tegan and Sara appeared Tuesday night on the Late Show with David Letterman to perform their latest single "Closer." The twins have also revealed the tracklist for Heartthrob, as well as the album artwork. The album releases Jan. 29 via Sire.

WATCH: Ellie Goulding Copes With Breakup in 'Figure 8' Video

While the video for "Figure 8" was in the works for some time, given Ellie Goulding's recent breakup with EDM star Skrillex, it's interesting to see the young British singer struggling with the loss of a recent lover in the new visuals. In the clip, she copes with the split by holding on to her former beau's belongings, laying in bed all day and recalling memories of the relationship.

WATCH: Florence & the Machine Debuts 'Lover to Lover' Video

In the latest video from Florence and the Machine, one of the strongest tracks off the year-old Ceremonials album is on display with "Lover to Lover." Ms. Welch is featured in the piece alongside Australian actor Ben Mendelsohn as a troubled duo that can't seem to work things out. In a dramatic finish that includes massive flames and a dive into the sea, it's certainly one of the best sets of visuals from this act.

WATCH: Matthew Mayfield Debuts 'Take What I Can Get' Video

Fresh off a tour with NEEDTOBREATHE and Good Old War, indie rocker Matthew Mayfield debuted on Monday morning a new video showcasing the track "Take What I Can Get" off his newest album A Banquet for Ghosts, which released earlier this year. The video itself, directed by Kinora Films, is an emotional visual journey that sees Mayfield playing his guitar in a makeshift house surrounded by painful memories that start to go up in flames one by one.

WATCH: The Killers Cover U2's 'With or Without You'

To mark the end of the band's U.K. tour, The Killers covered U2's "With or Without You" in London Saturday night. The stripped down performance can be seen below via fan footage. The Brandon Flowers-fronted band is currently on tour for the next few months, joined by sister duo Tegan and Sara for many of their upcoming U.S. dates.