2005. Instead of involving Godrich, Radiohead hired the producer Spike Stent, but the collaboration was unsuccessful. In September 2005, Radiohead contributed "I Want None of This", a piano dirge, for the War Child charity album Help: A Day in the Life. The album was sold online, with "I Want None of This" the most downloaded track, though it was not released as a single. In late 2006, after touring Europe and North America with new material, Radiohead re-enlisted Godrich and resumed work in London, Oxford and rural Somerset, England. Recording ended in June 2007 and the recordings were mastered the following month. In 2007, EMI was acquired by the private equity firm Terra Firma. Radiohead were critical of the new management, and no new deal was agreed. The Independent reported that EMI had offered Radiohead a £3 million advance, but had refused to relinquish rights to the band's back catalogue. An EMI spokesman stated that Radiohead had demanded "an extraordinary amount of money". Radiohead's management and Yorke released statements denying that they had asked for a large advance, but had instead wanted control over their back catalogue. Radiohead self-released their seventh album, In Rainbows, on their website on 10 October 2007 as a download for any amount users wanted, including £0. The landmark pay-what-you-want release, the first for a major act, made headlines worldwide and created debate about the implications for the music industry. Media reaction was positive, and Radiohead were praised for finding new ways to connect with fans. However, it drew criticism from musicians such as Lily Allen and Kim Gordon, who felt it undercut less successful acts. In Rainbows was downloaded an estimated 1.2 million times on the day of release. Colin Greenwood explained the internet release as a way of avoiding the "regulated playlists" and "straitened formats" of radio and TV, ensuring fans around the world could experience the music at the same time, and preventing leaks in advance of a physical release. A special "discbox" edition of In Rainbows, containing the record on vinyl, a book of artwork, and a CD of extra songs, was also sold from Radiohead's website. The retail version of In Rainbows was released in the UK in late December 2007 on XL Recordings and in North America in January 2008 on TBD Records, reaching number one in the UK and in the US. The success was Radiohead's highest chart placement