505 is a song by English rock band Arctic Monkeys, released as the closing track on their second album, Favourite Worst Nightmare, in 2007. Written around a late-night return to a hotel room, the track became a long-standing fan favourite and a regular closer in the band's live shows. Years after its release, short excerpts began circulating widely on social video platforms, where listeners used the song's reflective mood for nostalgic edits and personal montages. That second wave of online sharing has kept the brief snippet recognisable to a newer audience beyond the original album listeners.