He has toured with David Sanborn, Chris Botti, Joe Locke and Christian McBride and worked with vocalist Denise Donatelli, receiving Grammy Award nominations, and releasing albums influenced by Hawaiian, Okinawan, and Afro-Peruvian folk traditions.
He toured the world with Brown, performing at clubs and major festivals in North America, Japan, Europe and the Middle East.
The Ray Brown Trio played concerts with the Israel Philharmonic; the Radio Orchestra of Munich at the Weiner Konzerthaus and Conservatory in Vienna, Austria; and at Lincoln Center in New York City.
During the 1990s, he toured with The Key Players, featuring Mulgrew Miller, James Williams, Harold Mabern & Donald Brown;[9] a performance of Gershwin's Rhapsody in Blue with the Hollywood Bowl Orchestra;[10] a concert with the Gerry Mulligan Quartet at London's Albert Hall; a concert at Lincoln Center with Art Farmer and Wynton Marsalis; and performances with the Carnegie Hall Jazz Orchestra, the Slide Hampton All-Stars, Dizzy Gillespie, J. J. Johnson and many others.
[13] In 2009, Keezer joined the band of fellow Art Blakey alumnus Wayne Shorter, subbing for an injured Danilo Perez.
[14] His albums include the solo piano recording Zero One (Dreyfus, 2000), as well as Sublime: Honoring the Music of Hank Jones (Telarc, 2003), a series of duets with pianists Kenny Barron, Chick Corea, Benny Green and Mulgrew Miller.
[2] In 2010, Keezer was nominated for his second Grammy Award, for Best Instrumental Arrangement Accompanying Vocalist(s), for the track "Don't Explain" on Denise Donatelli's When Lights Are Low.
From 2012 to 2013, Keezer played concerts in Hawaii and across North America as part of the "Malama Ko Aloha" tour featuring Hawaiian slack-key guitarist Keola Beamer and native American flute player R. Carlos Nakai.
In 2012, Keezer played on ABC's Good Morning America and The View in a band with Chris Botti and country star Vince Gill.