Blue (Da Ba Dee) was released by Italian Eurodance group Eiffel 65 in 1998 and became a worldwide hit in 1999, reaching number one in many countries. Its nonsense-syllable chorus and story of a blue man living in a blue world made it easy to remember across languages. The song later found a second life online through early viral videos, remixes, film placements and memes. Short clips of the hook still circulate on soundboards because the melody is recognised worldwide within the first few notes.