Final answer:
Radiohead's album 'In Rainbows' was released independently online in 2007 using a pay-what-you-want model, challenging traditional music distribution.
Step-by-step explanation:
Radiohead's first album released independently online in 2007 was titled In Rainbows. This album was groundbreaking in the music industry for its release strategy, where fans could pay whatever price they felt appropriate for the digital download. This move was seen as a challenge to traditional music distribution methods and demonstrated Radiohead's willingness to experiment with new models of selling music, taking advantage of the Internet to reach their audience directly.