|#||Release title||Total tracks||Type of release is||Imprint date||Label|
|1||Lush Life||10||Audio||1975||Omega International|
|2||Dutch Jazz Giants Volume 2||10||Audio||1999||Point Entertainment|
Trumpeter, born 24 May 1939 in Cleveland, Ohio, USA.
Worked in New York City with the orchestras of [a=Benny Goodman], [a=Woody Herman] and [a=Tito Puente] during the late 1950s and was a member of [a=Maynard Ferguson]'s band from 1959 until 1963.
Kiefer moved to Germany in 1965 and joined the orchestras of [a=Max Greger] (1966), [a=Kurt Edelhagen] (1967-1973) and later [a=James Last]'s orchestra, the [a=Clarke-Boland Big Band], [a=Peter Herbolzheimer Rhythm Combination & Brass] and the [a=WDR Big Band Köln] (1977-2004).