'Blue (Da Ba Dee)' by Italian group Eiffel 65 was released in 1998 and became a worldwide number-one dance hit in 1999, famous for its autotuned 'I'm blue' chorus. A decade later, producers began flipping the melody into trap and dubstep remixes built on 808 drums, a style that thrived on YouTube and SoundCloud in the 2010s. The remix keeps the instantly recognisable hook while adding festival-level drops, which is why editors still reach for it when a clip needs retro recognition plus modern bass energy.