Ladanyi suffered severe head trauma Friday during an on-stage accident while on tour with singer Anna Vissi.
An engineer, mixer and producer, Ladanyi shared a Grammy in 1982 with three others for engineering Toto's album Toto IV.
He received more than a dozen Grammy nominations, including as a producer on Don Henley's record “The Boys of Summer" in 1986, and as an engineer for Los Jaguares' album Bajo El Azul De Tu Misterio at the inaugural Latin Grammy Awards in 2000.
Ladanyi was a producer on three Henley albums, starting with his 1982 solo debut, “I Can't Stand Still."
His production credits include Fleetwood Mac's 1990 album Behind the Mask, guitar virtuoso Jeff Healey's 1988 album See the Light, the Church's Starfish from 1988, the Cruzados' 1987 album After Dark and David Lindley's 1981 album El Rayo-X.
Ladanyi worked on six albums with Browne, starting as an engineer on The Pretender in 1976.
Born in Elkhart, Ind., in 1952, Ladanyi grew up in Los Angeles. He worked as a doorman at Gazzari's, a rock club on the Sunset Strip, before learning about record engineering and producing at the Sound Factory. He formed the Maple Jam record label in 2004.
