Is there a program that uses layers to edit tracks? Basically, I want to paste on top of a track without affecting the location of the music that's under it on the master kick track. After I had it sounding right or in time, I could merge the layers to have my finished track. For instance, I have a drum performance where the kick drum is not always in time. I'd like to move the kick hits ahead or behind the spot without affecting the signal around it. If I could copy the kick hit to a layer on top of the bad kick hit and see it transparently on top. This top kick hit could be moved anywhere across the track while hearing only whats on the top in relation to what's before and after it on the bottom layer. Basically, I want to paste on top of a track without affecting the location of the music that's under it. Any such program?