You might want to re-assess that one Fran. The Korg DOES allow any sort of media to be used in its songbook, and subsequent playlists. Along with EVERY setting on the keyboard, including vocalist, ALL ots settings ALL pedal and controller settings etc etc. Adn all at the touch of one Songbook entry.
AND all Songbook entries can be selected via MIDI form an external source (laptop eg) not 144, then you have to change sets.

If you have 1000 songs in the songlist then every one of them can be selected at any time via this method.

The Korg songbook really has NO peer at all. The Roland Im afraid does not come close.

But the Rolands do have other benefits

Dennis