- Bruno Mars performed 'Count on Me' on the ukelele as a touching tribute to the victims of the Sandy Hook Elementary School shooting on 'Ellen. [YouTube]

- Listen to DJ Earworm's 'United States of Pop 2012.' [PopBytes]

- Go behind the scenes of the 'Glee' episode for 'Glee, Actually.' [Hypable]

- Watch the YouTube Rewind for 2012 featuring Psy, Carly Rae Jepsen and Karmin wannabes. [Rickey]

- Listen to Cody Simpson's 'Super Beach Kids,'  a cover of Frank Ocean's 'Super Rich Kids.' [Hollywire]

- Cassadee Pope talks about her duet with Avril Lavigne! [BuzzNet]

- Demi Lovato says she wants to work with Fifth Harmony after 'X Factor.' [Billboard]

- Alicia Keys is definitely being sued over her song 'Girl on Fire' after a songwriter threatened a lawsuit a couple weeks ago. [Billboard]

- Live large like Pharrell Williams. His Miami mansion is on the market for $16.8 million. [FreshHome]

- Watch Asher Monroe's video for 'Why Worry.' [MTV]

- Listen to Röyksopp's new single 'Running to the Sea' featuring Susanne Sundfør. [ArjanWrites]

- Check out the teaser for Vita Chambers' 'Fix You' video. [JustJaredJr.]

- A memorial service for Jenni Rivera is set for tomorrow. [Billboard]

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