"His work and influence have left an enduring legacy in Canadian media, touching the lives of many and shaping the industry he loved so deeply," says Billboard Canada's Mo Ghoneim.
Roper, 45, joined Dualtone in 2002 as an intern and rose through the ranks to the role of president/partner.
Hart tells Billboard that "the shock is still with us" from Hussain's passing, but he was happy to share the great memories he has of his friend and fellow rhythmist.
Apples in Stereo's Robert Schneider announced Hart's death from natural causes on the same OTC released their first new music in 13 years.
The musician was a member of the rock band from 2004 to 2010.
Over the course of his more than five-decade career, Martinovich worked with artists ranging from Michael Jackson to Dolly Parton.
Byron was the second drummer for the Brothers Gibb to pass this week, following on the heels of early time-keeper Colin Petersen
Petersen joined brothers Barry, Robin and Maurice Gibb as part of the Bee Gees in 1966.
The country music icon's sister confirmed the sad news on social media.
The Minneapolis singer-songwriter released four albums from 1988 to 2011.
