The document lists various music genres and sub-genres including rap, pop, indie, rock, grime, hip-hop, R&B, UK top 40, and electro pop. It then provides more details on the sub-genres of indie rock and indie pop, describing their origins in the UK in the 1980s. Examples are given of notable indie rock bands such as Arctic Monkeys, The Strokes, and Oasis, and indie pop bands such as The 1975, Bastille, and Two Door Cinema Club.