Well, my brother wrote lyrics for a 12 song rock opera, and I recorded demo tracks for it. He provided the story arc, which was a Sci Fi love story in the vein of Bride of Frankenstein. If that sounds wild, it was. Had a good time scoring it, and wrote each song in a different key until I had used them all. Agree that the concept is the hardest part, but when you have a committed lyricist, it can fall in place pretty quickly...

DC Ron
BiaB Audiophile
Presonus Studio One
StudioCat DAW dual screen
Presonus Faderport 16
Too many guitars (is that a thing?)