Hey @Lindsey welcome to the club! I too was a 35 year guy who switched to VSTs and ONLY because Gig Performer made that possible. I gave up rock bands, folk trio, even cruise ship, and now do a solo piano bar routine. I have only one 88-key keyboard, and everything else through Gig Performer. I use the song/setlist which allows you to move through parts of a song (Intro, Chorus, Solo, Verse, Outro, or however you create and name them) and switch through the different sounds/VSTs with each song part.
I use Mobile Sheets, which maintains my 600+ songs and when I select a song (an audience request) from Mobile Sheets, it automatically sends the Midi program change to Gig Performer and pulls up the appropriate Song and sounds! I wrote a guest article for the GP blog on using Mobile Sheets here: How to set up MobileSheets on a PC with Gig Performer
I also launch a second instance of Gig Performer to run my small PA, using a Behringer X-Air 18, using this Gig file from Glen here on the forum.
Also, I never used backing tracks before, but Gig Performer made that possible, so now I do a mix of both live music, and live with back tracks using the Gig Performer streaming audio player, which you can download some controls from another user, and moderator here @NPudar Streaming Audio File Player controls.
Again, when I select a song from Mobile Sheets, it will pull up the song with the related instruments in Gig Performer, and if it has a backing track, it’s already loaded in the Streaming Audio File Player.
There’s literally no end to the use cases. Enjoy, and welcome to the community for owning the stage with Gig Performer!