A negative is everything you hear in a song - besides the vocal - it's like a soundtrack - imagine kelly clarkson singing " a moment like this " but hearing just the instruments and not the voice. Imagine josh groban's " you raise me up " but just the song, without the vocal. If you wanna perform at american idol you need the " negative " i don't know how you call it in america... It's everything you hear but the voice. The song flows normally but the voice is mutted I hope you understand what i mean - and i wanna do that, too for my friend - i think i need the 16 track sequcencer - i need to record drums, piano, strings, bass, guitar and all that and then, put it on a cd and give it to her...Best wishes, claudiu