South London producer Pyrenees (a.k.a. Jeremias Carroza) hasn't shared much since he released his debut album, The Forest & the Sea, via Ensmble earlier this year, but he's been quietly hard at work nonetheless. In fact, he's been crafting another LP for the last 10 or so months, and has offered one of its cuts as a free download. "Bird Migration" is a high-energy roller, full of whirring sounds and bright colors anchored to a speedy beat. If you dig the track, you can check out the rest of Pyrenees' new record, called Wilderness, after the jump.