Watch Online Free HD Solarmovies. Musilac is a multi-genre music festival held annually in Aix-les-Bains, France. Held over four days for the first time in 2017, the festival's diverse lineup regularly spans genres and generations with internationally renowned names from the worlds of rock, pop, indie, hiphop, dance music and more. Held between the beautiful Lac de Bourget and the region's stunning mountainous nature reserve, the festival can definitely lay a claim to being one of Europe's most scenic.