On February 9, 2009, Mayer told Ellen De Generes that he thought he should not have won the Grammy for Song of the year because he thought that Alicia Keys' "If I Ain't Got You" was the better song.
He also performed on commercial releases, namely, with Eric Clapton (Back Home, Crossroads Guitar Festival), Buddy Guy (Bring 'Em In), John Scofield (That's What I Say), and B. His voice was sampled on the song "Go by rapper Common, and he appeared on Kanye West's a hidden track from the album Graduation, "Bittersweet Poetry".
In the spring of 2005, Mayer formed the John Mayer Trio with bassist Pino Palladino and drummer Steve Jordan, both of whom he had met through studio sessions. In October 2005 they opened for the Rolling Stones Mayer's third studio album, titled Continuum, was released on September 12, 2006, produced by Mayer and Steve Jordan.
For the opening track, "Back To You", a full band was enlisted, including the EP's co-producer David "De La" La Bruyere on bass guitars.
After including him in Aware Festival concerts and his songs on Aware compilations, in early 2001, Aware released Mayer's internet-only album titled, Room for Squares.
Mayer's secondary career pursuits extend to television hosting, comedy, and writing; he has authored columns for magazines such as Esquire.
He supports various causes and has performed at charity benefits.
At the 37th Annual Songwriters Hall of Fame Induction Ceremony in 2006, Mayer received the Hal David Starlight Award. These recordings were released to the i Tunes Store under the title As/Is, indicating that the errors were included along with the good moments.
Mayer again recorded live concerts across seven nights of his U. A few months later, a "best of" CD was compiled from the As/Is nights.
Mayer suggested the album was intended to combine blues and pop.
In that vein, two of the tracks from his Trio release Try!
It also received general praise critically, and Mayer drew comparisons to Dave Matthews.