Music Power Rankings: Mumford & Sons, Adele and Justin Timberlake top the list

1. Mumford & Sons: The British quartet accomplishes something the likes of Bruce Springsteen, the Beach Boys and R.E.M. have never done by winning the Grammy for album of the year. In doing so, “Babel” towers over all over albums next week on the Billboard 200. 2. Adele: She doesn’t even have to put out new music to win a Grammy... or any award. We just want her to promise she’ll attend and give a hilariously candid acceptance speech. 3. Justin Timberlake: After a six year absence, he and Jay-z will tour stadiums this summer. That’s a lot of sexy. 4.