During his university years he additionally had private lessons with David Friedman (USA) and attended workshops with e.g. Keiko Abe, Billy Hart, Dave Weckl, Billy Cobham, Ed Thigpen, David Liebman/Richard Beirach, and Reinhard Flatischler.
Other jazz musicians who have used elements of folk music include Jiří Stivín (Inspirations by Folklore CD) and Emil Viklický (Morava, 2003 CD, together with Billy Hart, George Mraz and Zuzana Lapčíková).
Billy Joel | Billy Wilder | Billy Crystal | Billy Bob Thornton | Billy Taylor | Billy Hart | Billy Connolly | Billy Bragg | Billy Idol | Billy Cobham | Billy Preston | Billy Ray Cyrus | Billy Graham | Billy Eckstine | Billy Budd | Mickey Hart | Gary Hart | Hart to Hart | Billy the Kid | Billy Sunday | Melissa Joan Hart | Billy Mitchell | Billy Zane | Billy Squier | Billy Martin | Billy Corgan | Lorenz Hart | Billy Ocean | Moss Hart | Billy Joe Shaver |
Kehati has played and worked with renowned artists such as Ran Blake, George Garzone, Eli Degibri, Donny McCaslin, Seamus Blake, and more prominently, with the legendary drummer Billy Hart who has been a part of his trio since 2009.
It featured Raul de Souza, Gerald Hayes, Amaury Tristão, Dom Salvador, Ron Carter, Guilherme Franco on the songs "Novo Ano" and "Highway" which were composed by Amaury Tristão, and Lawrence, Souza, Albert Dailey, Carter and Billy Hart on all other selections.
It was released on the Japanese DIW label in 1997 and features performances by Douglas, Bill Carrothers, James Genus and Billy Hart.
Music to Ease Your Disease is an album by jazz pianist Horace Silver, his fifth and final release on the Silverto label, featuring performances by Silver with Clark Terry, Junior Cook, Ray Drummond, and Billy Hart, with vocals by Andy Bey.
He returned to New York City and has since worked with Don Pullen, Pharoah Sanders, Sonny Fortune, Billy Hart, Larry Coryell, Chucho Valdés, Hank Jones, Cecil Taylor, Randy Weston, Freddie Hubbard, Kirk Lightsey, and Attila Zoller.
Jarmo Savolainen Quartet & Quintet: True Image (1995; with Dave Liebman and Sonny Heinilä (sax), Tim Hagans (trumpet), Ron McClure (bass), and Billy Hart (drums))