411 Mania — And Katy Perry and Bruno Mars benefit most from it... more info

ContactMusic — BRUNO MARS will start 2011 as America's pop chart king - his GRENADE has blasted KATY PERRY's FIREWORK off the top of the Billboard Hot 100.Perry falls to two as both top tracks make history as digital downloads, scoring two of the biggest sales week... more info

411 Mania — "Grenade" tops Katy Perry's "Firework"… more info

Reuters — NEW YORK (Billboard) - Bruno Mars ended Katy Perry's three-week reign on Billboard's Hot 100 singles chart on Wednesday, rising one place to the top with "Grenade," his second No. 1 hit as a lead artist. more info

Perez Hilton — iTunes is pretty happy Santa bought gift cards in bulk this Christmas! Music sales were at an all-time high this week on iTunes and astoundingly in CD stores. The big winners of the week in sales were Katy Perry and Bruno Mars, whose recent singles F... more info

ContactMusic — CEE LO GREEN's naughty F**K YOU has scored another year-ending poll win - the tune's promo has been named cable music channel VH1's Video of 2010.The flashback film beat Pink's Raise Your Glass and Radioactive by Kings of Leon. Also making the new to... more info

Mjsbigblog — Dance jams filled the Hot 100 during 2010, and DJ Earworm takes the Top 25 songs from the year end Billboard Hot 100 chart to make a glorious mash-up of your favorite auto-tuned, beat- filled pop songs. Are your favorite songs samp... more info

ContactMusic — Katy Perry is creating an "aroma" especially for her 2011 European tour.The 'Teenage Dream' singer is planning a spectacular stage show for her tour next year and is determined for it to engage all the senses of her audience. She said "It's going to ... more info

411 Mania — Jennifer Lopez faces Ninel Conde in a champion Vs, a look at the best albums, tracks and moments of the year, Alanis gives birth on Christmas day, the top music-related quotes of 2010, a look ahead to 2011, 5 true facts that will blow your mind, Katy... more info

ContactMusic — Katy Perry will not be toning down her outrageous dress sense in 2011. The 'Firework' singer is renowned for her crazy sense of style - wearing items as diverse as blue and purple wigs, dresses with holes in them and costumes styling her as a Christm... more info