While Glassnote Entertainment‘s Mumford & Sons didn’t walk away with a Grammy award Sunday night, they did see a huge bump in one-day sales for their debut album Sigh No More. It currently is sitting atop the iTunes album chart at #1. Other winners and performers from the night, which saw the largest ratings for the award show in over a decade, are also getting a sales spike in the wake of the event… As anticipated, Pandora filed for an IPO last Friday seeking to raise $100 million, making it the first Internet-music company to go public since Napster went bankrupt in 2002. In filing, it was revealed, among other things, that the company spends half of its revenues on acquiring content, a fact that AllThingsDigital‘s Peter Kafka points out, isn’t a bad thing… Reports over the weekend have Apple considering the possibility of turning its paid MobileMe storage service, into a free “locker” for personal memorabilia such as photos, music and videos – reigniting talk of the company’s move into offering a streaming-music function. Meanwhile today, Apple announced the launch of a content subscription system for music, videos, newspapers, magazines and other forms of content, which will work similarly to app purchases, except that customers choose their type of subscription. As for what it might mean specifically for music, Evolver.fm points out; on-demand subscriptions like MOG, Rhapsody, Napster and Spotify, and the paid version of interactive radio services such as Last.fm, Pandora and Slacker, can now charge you for a subscription right within iTunes, with the same convenience for you — and the same loss of revenue for them... Radiohead has announced details about their new album The King of Limbs, which will see a digital release this weekend, a month ahead of a physical release via XL Recordings. The band’s co-manager explains to Music Week the reason behind not releasing the new album in the same manner as In Rainbows… Former EMI Music A&R prexy Nick Gatfield has been named President Of Music Division for Sony Music UK, reporting to Chairman and CEO Ged Doherty… And does Guy Hands really want to double down and make a bid for both Warner Music and EMI?