Thank you, thank you very much (in best Elvis voice).
Actually I'm not sure if I thought that up or something made me think of it. But it sure does simplify things.
To elaborate, save all your Songbook entries as usual, but select Genre and change it to 1, or A or whatever you wish.
When you power on, press Songbook, Filter, Genre and 1, then Yes. All your Songbook entries will appear in alphabetical order.
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DonM