Gomez's album When the Sun Goes Down, released earlier in 2011, is her most successful to date. She'll be host of the EMAs and could possibly perform with her boyfriend, Justin Bieber.
Derulo's second studio album Future History was released on September 27th, 2011. Its lead single "Don't Wanna Go Home" was a No. 1 hit in the UK.
Red Hot Chili Peppers
The Peppers are in the midst of their first tour in four years in support of the album I'm With You. It's also their first tour with new guitarist Josh Klinghoffer, who replaced John Frusciante earlier this year.
The band's fifth studio album Mylo Xyloto was released on October 24th, 2011 and they're about to embark on a European tour.
The British singer's debut album, Who You Are, was released in February and reached No. 2 on the charts in the UK and No. 11 in the US. She was the house performer at this year's MTV VMAs, performing around the commercial breaks. She is a coach and mentor on the UK version of The Voice.
Lady Gaga's most recent album Born This Way, was released in May and has already sold more than 7.2 million copies. She won two awards at this year's MTV VMAs, where she dressed as her male alter-ego Jo Calderone.
The "party rock" electro pop duo of DJs Redfoo, right, and SkyBlu is currently working on their third album, due out in 2012.
The Irish alt-rock band is about to release their sixth album, Fallen Empires, on November 14th. They will tour the UK after its release.
The singer-songwriter and record producer's new song "It Will Rain" will appear on the Breaking Dawn -- Part 1 soundtrack.