Jimjam58 so are you saying you just want to use ST3 as a midi contol device to trigger your devices, you dont need lyrics or audio, but you want to trigger different song midi settings at your choosing time so when the band finishes one song you then trigger the next setting.If thats all you are after as peter said just program a text only song perhaps choose 10seconds time on every song you create, enter your midi requirement in every song you perform, once you have all your songs activating your midi devices as required, place them in a playlist in order of your performance, every time you need a song program change choose it and hit play now you are ready, plus the next song will be cued up for you in 10 seconds so as the band finishes the now song you hit play again and you are ready to go, using playlists with foot pedals alows you to choose any song by foot so you can either run in pre programed order or if you change your mind last moment just scrool to another song hit play and you have your gear setup, i assume this is all you are after.
Perhaps if your requrement is different you can precisely write down your needs and we can help with more precision, ST3 is a beast that can do lots of things in so many different ways it just takes your imagination to use it wisely, it sounds like you are a creative thinker using something in a way a number of people would not consider.
A Feature I am looking forward to.
If or when we get looping capability you will be able to change your instrument settings within the song itself on the run at any time to any loop point and have as many changes as there are loop points, this would be very powerful easy control on stage for a lot of midi users like guitarists keyboard players lighting etc
Cheers Damir