"Blue (Da Ba Dee)" is a song by the Italian music group Eiffel 65, released in 1998. The track features a catchy melody and electronic dance music elements, making it popular in clubs and on radio stations worldwide. The lyrics describe a character who lives in a blue world, emphasizing feelings of isolation and melancholy. The song became a major hit, reaching the top of the charts in multiple countries. Its distinctive chorus and memorable hook contributed to its lasting popularity, and it has been featured in various media, including movies and commercials, solidifying its place in pop culture history.