A remix of a song, almost exclusively in the electronic dance music genre, in which the remixing DJ uses an entire song or samples from a song in a remix without the explicit permission of the original artist. This is however considered an acceptable practice as nearly all EDM DJs care more about the music than they care about the money. Having someone remix your song, bootleg or not, is typically a sign of great respect and appreciation.
Have you heard the Omnia bootleg remix of Orjan Nilsen's La Guitarra?
Hell yes, fucking CHOON!