"B-sides" refer to the secondary tracks on a music single, typically found on the opposite side of the main song. Originally, when records were produced, the A-side featured the hit song, while the B-side often included lesser-known tracks or experimental pieces. Over time, B-sides have gained recognition for showcasing an artist's creativity and diversity. Many artists, including The Beatles and Nirvana, have released memorable B-sides that fans cherish. These tracks can provide insight into the artist's style and evolution, often featuring unique sounds or themes that differ from their mainstream hits. B-sides can also serve as a way for artists to connect with dedicated fans.