Businesses in the Records & CDs category sell recorded music on physical formats, principally vinyl records and compact discs. Their stock may include current releases, reissues and older recordings, covering genres such as pop, rock, classical, jazz, folk, electronic and soundtracks. Some shops focus on particular styles or periods, while others offer a broad selection of music. Customers may find albums, singles, box sets and compilations, as well as music-related items such as record sleeves or storage accessories. Stock can be new, second-hand or a mixture of both. Shops dealing in used music may buy, exchange or take in collections, and may assess items for condition before resale. Staff can often help customers identify editions, formats or recordings, and some businesses take requests for items not currently in stock.