tricky question

i have a cd that has bass panned all the way to the left and piano all the way to the right. i loaded one of the tracks into sonar. it showed as a one clip with two wave patterns, one for each side. i panned all the way to one side, so i could get just the piano. what i want to be able to do is make it to where the piano part comes out from both speakers. in other words, i want the bass part eliminated and the piano part to not only sound out from its original side, but also the side where the bass part sounded. kind of awkward wording, but i think you get it. any help appreciated, thanks, steve