Ne-Yo was one of the most successful songwriters and artists of the 2000s. His breakthrough didn't come until late 2004, as the co-songwriter of Mario's "Let Me Love You," a number one Hot 100 hit that Billboard later determined to be the eighth most successful single of the decade. By the close of 2009, however, Ne-Yo had racked up a career's worth of accomplishments. He released three albums, all of which went platinum in the United States. Seven of his singles, as well as five on which he appeared as a featured artist, peaked within the Top Ten of the country's Hot R&B/Hip-Hop chart. Beyoncé's "Irreplaceable" and Rihanna's "Take a Bow," two of the many songs he wrote for other artists, were smash hits as well. His music added a high level of sophistication to pop-R&B while appealing to younger audiences.