You can also assign a break to the FC-7. There's also a cool trick that works as a substitute for a proper break/fill. Assign the break command to either a switch or FC-7 switch, and put the ACC ON/OFF button next to it. Hit them both at the same time, then after a short break, hit the fill. You'll now get bass and drums for the pickup, then hit the ACC ON/OFF on the 'one' and the band comes back in. No, it's not a full, proper break/fill, but it's close, and unlike the break/fill, you DO have the option of a full bar break if you want one.

The thing I noticed with the rock guitar demo was the lack of aftertouch kills the realism if you are playing a tune with changes. It's all well and good to take your LH off the keyboard and work the wammy bar if you don't have to play the chords (I'm surprised he didn't use the CS to help him out here) but live arranger play seldom affords you the time to do this. A non-vibrato'd guitar simply doesn't exist! The lack of aftertouch on Roland's current TOTL arranger is a cut I don't think they should have made.

I have to admit, the tempo synced loops finally make arrangers nearly as 'hip' as workstations... when Ralph brings in the breakbeat loops over the bossa track, it was like 'Welcome to the 21st century!'. I know that Ketron have had this feature for a while, but Roland have brought it down to a new price point, and made it fairly easy to use and edit. For smooth jazz, and as a way to add mash-up and contemporary dance flava to what we currently do, it's a game changer. Yamaha need to pull the finger out, and add looping capabilities to the multipad audio wav's on the S950. This is just too cool!
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An arranger is just a tool. What matters is what you build with it..!