"100,000 Fireflies" is the first single by the American indie pop band The Magnetic Fields, taken from their first studio album Distant Plastic Trees, released in 1991. It is known for its bleak, tongue-in-cheek lyrics and black humour and for Susan Anway's sparse, soprano vocal performance. The song had limited mainstream success, with minor radio play on alternative stations on its release, but slowly grew into a cult classic becoming "the ultimate staple" of indie mixtape culture during the 1990s.