His creative projects have included chanting and healing works, museum and gallery installations, large-scale festival events, radio and TV broadcasts, film soundtracks, commercial sound design, and advertising jingles.
[3] In 1963, Morrow received a Diploma in Composition from Mannes College of Music where his teachers had included Stefan Wolpe and William Jay Sydeman.
But in 1973, after “An Evening with the Two Charlies”, a programme of pieces by Morrow and Charles Ives presented at Lincoln Center, he turned away from the concert hall, preferring to work in public spaces, parks, harbours and city streets.
“I became more interested in working with environmental acoustics rather than the blank canvas of the concert hall, where you remove all other sound in order to create your own,” Morrow has explained.
Amongst his other large scale public events Citywave, realised on the streets of Copenhagen in 1985, involved around 2000 participants, including folk singers, bell ringers, rock groups, marching bands, a helicopter and clowns on bicycles.,[8][9] In 2010 Finnish pianist Ilmo Ranta performed a concert of Morrow’s piano music at the Sibelius Academy in Helsinki.
The Little Charlie Festival, a five-day celebration of Morrow’s life and work held in New York City during Fall 2010, gave some indication of the category-defying scope of his creative activity.
In 1969, painter Carol Brown invited Morrow to create a piece for the Marilyn Monroe Show at New York’s Janis Gallery.
He has also created audio tours for Kennedy Space Center, the Great Platte River Road Memorial Archway and the Empire State Building, New York.
Installations include Foster and Partners Forteleza Hall at S.C. Johnson Company HQ in Racine, WI, The Smithsonian Institution's Arctic Study Center in Anchorage, Alaska, Nationwide Children's Hospital in Columbus, Ohio, and the Football Performance Center at the University of Oregon, Eugene, Oregon.
Morrow has created feature film soundtracks for Frances Thompson’s NASA Moonwalk One, Ken Russell’s Altered States, and Eleanor Antin's Man Without A World.
The interactive CD-ROM, ScruTiny in the Great Round, featuring Morrow’s music and visual art by Tennessee Rice Dixon and Jim Gasperini won the 1996 Grand Prix du Jury Milia d'Or in Cannes, France.