1942
Born in Los Angeles, California to Norman Nicholas and Lila Rhea Henkel.
1965
Graduates summa cum laude, Phi Beta Kappa, from the University of California Los Angeles, receiving a Bachelor of Arts in history.
1976
Receives a Bachelor of Music from California State University, Northridge.
1977
Composes the film score for the documentary, “The Silent Minority,” for the University of Southern California Gerontology Department.
1978
Joins the Music Clearance Department of Paramount Pictures in Hollywood, CA, and is a music reviewer at the LA Times a year later.
1981
Becomes secretary to Ernest Fleischmann, executive director of the Los Angeles Philharmonic Orchestra.
1983
Receives a Master of Arts in music composition with honors from California State University, Northridge.
1984
Broadcasts live concert music on a Sunday afternoon series on KFAC Radio.
1984
Serves as a scriptwriter and intermission feature producer for the Olympic Arts Festival & Chamber Music broadcast over KUSC-FM Radio.
1986
Is a scriptwriter and intermission feature producer of LA Opera (Otello), which is broadcast nationally on KUSC-FM Radio.
1988
Becomes a program annotator for the Los Angeles Chamber Orchestra.
1990
Releases Henkel: River Sky on Acoma CD, “The Many Moods of the Guitar.”
1990
Premiers “Book of Hours,” a five movement solo harp piece at Ducal Palace in Gubbio, Italy on live television.
1992
Premiers Sonata for Flute & Piano in London, England.
1993
Receives a commission from the Music Arts Council of the State of Alaska.
1994
Becomes a liner note writer for Pro Piano Records in New York, New York.
1998
Is a docent trainer and writer of classroom and teachers’ materials for the LA Chamber Orchestra’s Elementary School Outreach Program.
2003
Establishes the Sign of the Silver Birch Music publishing company in Los Angeles, California, where she serves as a composer.
2012
Becomes principal guest composer of the 28th Annual Dana New Music Festival at Youngstown State University in Ohio.
2014
Premiers Passing Doble for string orchestra at the 30th Annual Dana Festival at Youngstown State University,