From Zilker Park to Mueller Lake Park – Waterloo Park, Fiesta Gardens, Sagebrush – Austin teaches us music and the great outdoors go hand-in-hand. Pease Park Conservancy marks National Hispanic Heritage Month by welcoming Ana Barajas to its literal treehouse. As VHU, the Colombian roots-puller DJs ambient folklorism on recent singles “Exilio” and “Estrella de la Mañana,” both as native environmentally as cicadas. Under her own name, last year’s Mango Motel crooned classic traditionalism (“Ojos Bonitos,” “Volver Volver,” “Siboney”) with the confidence of a tribalist 15 years vested in the local scene. The event is free except for $12 tickets – 20 of them – for the top of the treehouse! – Raoul Hernandez