MTV.com News — Ke$ha, Coheed and Cambria and more knock last week's champ Jack Johnson out of the top 10.By Gil Kaufman B.o.B Photo: Frank Mullen The critical response to MGMT's sophomore album Congratulations has been mixed so far, but their fans had no ... more info

Big Apple Music Scene — Justin Bieber. The Bieb. El Bieberino. The 16-year-old pop wunderkind is en fuego. His debut album “My World” is No. 1 on the charts, he’s friends with fellow pop princes Usher and Justin Timberlake, he’s met President Barac... more info

411 Mania — Miley Cyrus, Usher, Selena Gomez, Coachella, Whitney Houston and more affected by the flight restrictions... more info

AllHipHop — (AllHipHop News) A highly anticipated concert featuring Nas and Damian Marley in the United Kingdom has been cancelled, due to a massive ash cloud that formed as a result of a volcanic eruption in Iceland. Nas and Damian Marley were slated to perform... more info

Reuters — LONDON (Reuters) - R&B singer Usher climbed to the top of the U.K. singles chart on Sunday with "OMG," a song featuring rapper will.i.am from the Black Eyed Peas. more info

BBC News - UK — Artists including Usher, LCD Soundsystem and Damian Marley have postponed UK visits following the closure of UK airspace. more info

BBC Radio 1 Newsbeat — Artists including Usher, LCD Soundsystem and Damian Marley have postponed UK visits following the closure of UK airspace. more info

ContactMusic — USHER has landed the number one spot on the U.K. singles chart with OMG, his collaboration with BLACK EYED PEAS' WILL.I.AM.The Yeah! hitmaker climbed up one place to take... more info

The Mirror — It's back to the laboratory for Professor Green. The rapper, who is Lily Allen's protege, lost out on the No.1 spot to comeback king Usher whose OMG, featuring Will.I.Am, is a big club favourite. Congrats. more info

The Mirror — US star Usher has hit the top of the British singles chart with his international success OMG, featuring Will I Am. more info