I am writing a story about these four teen who are musically talented and right now they are just starting to play together and I need a setlist for their first gig.

With that array of instruments, it might be best to go with something like James Bond music. Try For Your Eyes Only and Goldfinger. If you want to see how they sound, just find them on utube or playlist.com or anywhere else there might be music. I recommend those. I played them in band a month ago, and I just thought they sound really nice for this band.