Replay is a pop single by Iyaz that broke through internationally in 2009 and became one of the most recognizable radio hits of its era. Its chorus and repeated melodic phrase made it especially memorable, which is why short clips still circulate in memes, edits and nostalgia posts. Online, people keep using it because it instantly signals a late-2000s pop vibe and is easy to match with lip-syncs, flashback content and lighthearted montage videos.