Red Hot Chili Peppers released "Stadium Arcadium" in 2006. It was their first album to be number one in the United States. It was also number one on two other "Billboard" charts and in 12 other countries. The album won the Grammy Award for "Best Rock Album" in 2006. "Dani California", the first single, won the award for "Best Rock Performance By A Duo Or Group With Vocal". The music on "Stadium Arcadium" was more mature than on previous albums, according to Tim Chester from "NME". He said this was because most of the band members had families. He also said, and Brian Hiatt from "Rolling Stone" agreed, that the songs on "Stadium Arcadium" were similar to the band's other work, and were not very original. However, both reviewers said the music was very good. In an Allmusic review, Stephen Thomas Erlewine said Flea and Frusciante did excellent work on the album. He also said that "the string instruments are the reason to listen to "Stadium Arcadium"". Erlewine agreed that the band had not done a lot of new things on the album, but instead did what they were good at.