Who doesn’t like some sweet blues licks on the guitar? Koalas, apparently. A blues festival in New South Wales, Australia, may have driven a population of koalas away with disastrous results, The Guardian reports. Using radio collars, an ecologist tracked local koalas around the time of the festival in 2010. As his paper in Australian Mammalogy reveals, koalas living near the stage left their home area to get away from the music—a move that puts them at risk of disease and wild dogs. They eventually came back, but the stress of movement can stick around. Since then, the population has dwindled, although festival representatives say the music isn’t to blame.