Here is how quick the sequencer is on the PSR2100......When you hit Record, all 16 tracks are armed and all parts of the keyboard are available while playing. This way, you could start with just a Piano, then, after 8 measures, you could hit the 2nd part and add a layer and you are still in record mode. Next, you hit the accomp. on button, hit intro and all of this is being recorded, without having to stop and start over. Now, say after a minute or so, you would like to add a sound from one of the pads, or add harmony with your right hand sound......all of this is possible. To my knowledge, this is the easiest sequencer I've seen yet. However, if after recording your performance, you wish to add more tracks on empty channels, you are free to do this just by changing the default parts to channels to the ones you wish to record.
George Kaye
Kaye's Music Scene
Reseda, California
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)