Enns holds a PhD in Music Theory from Northwestern University: a masters degree in conducting from the same university.

Of his fifty or so works to date, many have been commissioned and perfomed by amateur and professional choirs alike. His works are published by Gordon V. Thompson and Waterloo Music in Canada and by Thomas House and Frank E. Warren in the United States. His works have been performed by the Canadian Chamber Ensemble, The Kitchener Waterloo Symphony, Symphony Hamilton. the Elmer Iseler Singers, the Winnipeg Singers, the Elora Festival Singers, the Kitchener Waterloo Philharmonic Choir and the Renaissance Singers, His Majestie's Clerkes (Chicago), and the Oklahoma State Chamber Singers among many others. His works have been performed across Canada, the USA and in Europe, both in regular concert performances and at major choral festivals such as the International Choral Kathaumixw in Powell River, BC, the American Choral Director's Association Convention in Chicago, the Three Choirs Festival in Gloucester, England, and the World Choral Symposium in Vienna, Austria. Among commercially available recordings of his works, highlights include those of his Te Deum, commissioned by the Winnipeg Singers, released in April 1999 ("Prairie Voices"), on a disc including their performance of his Three German Folksongs; and his motet, Most Glorious Lord of Lyfe, released several years ago by the University of Alberta Madrigal Singers ("Musicians wrestle everywhere").

In recent years Enns has also written increasingly for instrumental forces. The Silver Cord, a half-hour choral symphonv commissioned by the KW Philharmonic Choir, was premiered by that choir and the Kitchener Waterloo Symphony Orchestra in 1994. In 1996 Symphony Hamilton and soprano Elizabeth Peters premiered This Sunset Land, commissioned by the Orchestra to commemorate the sesquicentennial of the city of Hamilton; and in 1997 the Canadian Chamber Ensemble premiered Cantus. In a more popular idiom, Two by Four, commissioned by Habitat for Humanity. for soprano solo, piano, saxophone and string bass, was premiered in Waterloo in 1996 as part of a fund raising concert for the work of Habitat. Currently, Enns working on a 20 minute choral/orchestral composition to be premiered at the Winnipeg Centennial Concert Hall in the fall of 2000.

Enns is a member ot the Canadian League of Composers, and an Associate Composer of the Canadian Music Centre. He has had numerous commissions. with funding from both the Ontario Arts Council and the Canada Council. Most recently (fall 1998) his Missa Brevis was awarded first prize in the Ruth Watson Henderson Choral competition along with a premier performance by the Iseler Singers in February of 1999.