How did Toronto’s Old World Vulture come to produce the hulking slabs of synth-heavy instrumental rock they’ve built their reputation on? Call it a happy accident. Musically, their backgrounds are diverse: Mike Costanzo (guitar) and Anthony Perri (bass) played together in a band with a penchant for Guided By Voices-inspired rock, Devin Hughes (synthesizers) was a member of a pop-rock band, and Jamie Hunter (drums) was a singer-songwriter. When the band formed in 2008