Hard rock Entwistle until 2006) and Black Sabbath (with Osbourne 1997–2006 and Dio 2006–2010) and even a one off performance by Led Zeppelin (2007), renewing the interest in previous eras. Additionally, hard rock supergroups, such as Audioslave (with former members of Rage Against the Machine and Soundgarden) and Velvet Revolver (with former members of Guns N' Roses, punk band Wasted Youth and Stone Temple Pilots singer Scott Weiland), emerged and experienced some success. However, these bands were short-lived, ending in 2007 and 2008, respectively. The long-awaited Guns N' Roses album "Chinese Democracy" was finally released in 2008, but only went platinum and
Chinese Democracy Geffen had removed "Chinese Democracy" from its release schedule and withdrawn funding, stating: "Having exceeded all budgeted and approved recording costs by millions of dollars, it is Mr. Rose's obligation to fund and complete the album, not Geffen's." Around that time, manager Merck Mercuriadis said the album was close to complete. According to a March 2005 "New York Times" article, production costs for the album had reached $13 million, making it probably the most expensive recording "never made". Mercuriadis dismissed the article, writing in a letter that the newspaper's sources had not been involved with the project for several years.