Via macewan.ca:

Dr. Gilliland is one of Canada’s busiest composers. He has written music for solo instruments, orchestra, choir, brass quintet, wind ensemble, big band, film, television and theatre. His music has been performed by ensembles and soloists from around the world and recorded on over 20 CDs.

From 1999‐2004, Gilliland was composer-in-residence with the Edmonton Symphony Orchestra. He has also been composer-in-residence at the Festival of the Sound in Parry Sound, the Colours of Music Festival in Barrie, Ontario and the Strata New Music Festival in Saskatoon, Saskatchewan. In 2002, his orchestral work On the Shoulders of Giants took first prize at the prestigious Winnipeg Symphony Orchestra’s Centara New Music Festival Composers Competition. In 2012, his CD O Music was nominated for two Western Canadian Music Awards and won for Best Classical Composition. Allan has also won composition contests sponsored by Pro Coro Canada and the Alberta Band Association as well as first place in the Jean Coulthard Competition for Composers and the Lydia Pals Composers Competition.

Gilliland holds a diploma in Jazz Studies (trumpet) from Humber College, a Bachelor of Music degree in performance and a Master of Music degree in composition from the University of Alberta and a PhD in Composition from the University of Edinburgh. He has taught at the University of Alberta, the University of Edinburgh, Red Deer College and MacEwan University in Edmonton, Alberta , Canada where he is currently the Dean of the Faculty of Fine Arts and Communications.