If you're going to put together the first-ever Tiny Desk Family Hour — an epic night of Tiny Desk-style concerts, held at the wonderful Central Presbyterian Church in Austin during SXSW Tuesday night — you might as well kick things off with a core member of the Tiny Desk Family. Gaelynn Lea won 2016's second annual Tiny Desk Contest with the barest of ingredients: a few swooping violin strokes, a loop pedal and her fragile-but-forceful voice.