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It's 10 years since Radiohead allowed you to pay what you want for their In Rainbows album. Which other records have used unique ploys to get people to buy them?
The crown princes of odd album release strategies, Radiohead made a huge success of their "pay what you want" strategy for their 2007 album In Rainbows. At the time, Thom Yorke said that the album had made more for the band than digital releases of all their other albums.
Designer Richard Hamilton said that the famous serial number printing on The Beatles' self-titled album was meant to be ironic. That doesn't stop a roaring trade in the lowest-numbered copies in auctions of course. Ringo had Number 1 and it recently sold for £600,000 at auction. Copies signed by John and Yoko, like the one on the left, are worth few quid, too.
One of the most controversial Rolling Stones album covers featured a working zip and a belt buckle. Of course that wasn't the first thing most people noticed, it also featured a rather prominent bulge.
Brought out on four CDs and meant to be played on four separate speakers at the same time. Not surprisingly, singer Wayne Coyne has admitted since that it's not one for casual fans.
Thanks to a unique printing method that we won't really pretend to understand, the electro-poppers promised each fan who purchased their sixth album that they'd receive a unique album design.
Fed up of fans bootlegging mp3s of their songs, the group released the follow-up to Toxicity with minimal packaging and called it "Steal This Album". It still went platinum in the United States and sold well in Europe too - although nobody's exactly sure how many copies were nicked.
You can get music in a variety of ways these days: record shop, online, supermarkets - or in 2012, via helium balloon. To promote the release of Blunderbuss, Jack White sent 1000 balloons into the air with a flexi-disc of "Freedom at 21" attached to each one. Jack's manager later confirmed they're not sure how many of the discs survived the launch.
For the band's fourth album, they let fans choose their own tracklisting for The Future Is Medieval from a batch of tracks put online. Fans could sell their own versions of the record online then and even make money from them.
The sleeve was made of sandpaper that was designed to scratch any other LPs put beside it. When reissued recently, it came in a protective wallet - sensible, if slightly less rock and roll.
Public Image Ltd's second album's title offers a good clue as to how it was sold: three 12" records stored inside a metal film canister. Funnily enough, the PiL lads thought about using The Durutti Column's sandpaper idea but decided that the metal tin was a better/worse option.
Even fans who bought Beck's Song Reader in 2012 had no idea what it was supposed to sound like. Released as sheet music and artwork, the album would have sounded different for everyone who played it.
The band's 1997 single was reissued in 2007 as a wind-up music box. It really did work.
In January and February 2015, PJ Harvey set to work on her next album inside a one-way glass box at London's Somerset House. Fans could look in and watch Harvey and her team make the music but she couldn't see out of it.
Diehard fans of Brett and the boys who purchased this edition of the classic album got the usual items one might expect in an anniversary release: a book, multiple CDs and a DVD. But we're still not sure why the band also included a cassette in the boxset. Maybe for that one fan still holding on to their 1989 tape player?
Oh the things that bands got away with in the 1980s. The incredibly named Gaye Bykers On Acid released Drill Your Own Hole in 1987, an album which required fans to, indeed, drill their own hole. The first 1,000 copies of the album were pressed without a hole, so if you wanted to listen, it was down to the DIY shop for you.