From my point of view both are effective tools. What I like about Genos is the Playlist is tied to registration buttons, with 10 registration buttons the sky is the limit as to what can be set up. What’s cool about the Playlist in Genos is that you when you hit the Playlist selection via the touch screen it can be set to pull up any registration i.e. 1 thru 10. Usually I choose reg 1 to open a song. I reserve buttons 8 and 9 to turn on/turn off the vocal harmonized. I usually reserve button to for the ending. Playlist via registrations can trigger midi files or mp3 files too.

I don’t find advantages of Songbook over Playlist and vice versa, they both get the job done but in different ways.

I don’t have an s975 but I know for the s970 there’s the Music Finder feature but it cannot be tied to registrations like the Playlist in Genos. When I use the s970 I work with registrations and the Music Finder feature.