I bring the treble, don't mean to trouble ya'
I can be the treble, baby you could be the bass
So this could be a reference to their previous collaboration.
Treble also sounds like trouble, so it has a double meaning.
Will.I.Am also wrote all the lyrics to both Scream & Shout and Work Bitch, so it’s likely that this is the correct lyric.
To help improve the meaning of these lyrics, visit "Work Bitch" by Britney Spears Lyrics and leave a comment on the lyrics box