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.
He broke a lot of ground at award shows, just as he did in the recording studio and on sound stages.
The 28-time Grammy winner died Sunday (Nov. 3).
The Brooklyn-bred producer worked with Jay-Z, 50 Cent, The Notorious B.I.G. & more.
