I looked at one of these when they came out. They were expensive; it was over $2k. This is a great keyboard if (1. If you don't play at all and your singing over SMF or 2. you play over SMF.) This not arranger. Getting back to not playing use, you are able to set markers for SMF's, like intro, verse, chorus, bridge, and ending. The board has features that will allow you choose each marker with dedicated buttons. For example, you’re in the 3/4 through the SMF and you decide to go back to the verse. You would press the verse button and it would bring back to the verse and so forth with each button, intro, verse, chorus, bridge, and ending. But you would have to set up the markers on each SMF, the keyboard does not know unless you tell it. I'm not sure of then quality of the harmonizer, but I know it had one. It was a nice keyboard and Roland never really pushed it. It was release after the VA keyboards and it never went anywhere after that.