John Legend's follow-up album, Once Again, was released in 2006 with some production assistance from Kanye West and Will.I.Am. The album nearly achieved the same success as his previous one, reaching #3 on the Billboard 200 and #1 on the R&B/Hip-Hop charts, eventually going platinum. Bolstered by the success of the previous two albums, Legend attempted to experiment with the range of styles without straying too far from his signature style. The result was the 2008 album, Evolver, which has become one of the most popular among John Legend's fans. In 2010, John conceived another musical undertaking when he recorded a collaboration album, Wake Up!, with The Roots, who shared Legend's interest in a classic R&B style.