[3] Glatt began his professional association with music in the early 1950s, as a broadcaster, both at Clarkson College and for CFRA Radio in Ottawa.
[2] Glatt thereafter formed a loose association with Gesser and Toronto-based Vivienne Stenson, who owned two theatre businesses,[6] to produce a number of concerts, including performances by Theodore Bikel, Tom Lehrer, The Weavers, Odetta, Andre Segovia, Josh White and The Kingston Trio.
They also presented the Jose Greco Flamenco Dance Company and one person theatre performances by Emlyn Williams and Elsa Lanchester.
[1] Glatt's interest in music publishing had evolved from his management experiences with Ottawa-area bands, particularly The Children, which featured William Hawkins and, in later versions, Bruce Cockburn[7] and David Wiffen.
Glatt was also an investor in Le Hibou Coffee House, which promoted many international artists as well as local bands, such as The Children.
In the later 1960s, Glatt managed The Soul Searchers, an influential Toronto-based band featuring keyboardist William "Smitty" Smith, saxophonist Steve Kennedy, drummer Eric "Mouse" Johnson and singer Dianne Brooks[9] among others.
[11][12] Glatt also produced concerts by Johnny Cash, Bob Dylan, The Rolling Stones, The Beach Boys, Led Zeppelin, Gordon Lightfoot, Anne Murray and The Toronto Symphony Orchestra, among others.