Question: What large Berber confederation, principally inhabiting the Sahara desert, also has an annual festival showcasing their traditional music?
Sentence (from "Garamantes"): The Garamantes (possibly from the Berber "igherman" / "iɣerman", meaning: "cities" in modern Berber; or possibly from "igerramen" meaning "saints, holy/sacred people" in modern Berber) were a Berber tribe who developed an advanced civilization in ancient southwestern Libya.
Relevant evidence: No