Calgary’s Boreal Sons walk the line between delicacy and drama, tilting to the wind one way or another with aplomb. The youthful band is fearless in their experimentation and instrumentation. While melding such disparate worlds as classical composition and atmospheric space-rock, the quartet blends musicianship with a strong desire for experimentation. Officially formed in 2009, they’ve racked up a considerable resume: everything from a relatively straight ahead art-rock EP to a concept album based on a dog’s sleeping patterns, as well as extensive touring. Now, with Threadbare, they offer up a full and proper capturing of their sound. Displaying musical maturity far beyond their years, they have a knack for unique and engaging arrangements and a flair for the dramatic. Boreal Sons’ music is something akin to an aural aurora borealis, dancing and twisting across the musical atmosphere.