novel ideas

i like the idea of a short novel based on two boys who decide to dig out a secret hide away for themselves. In the process of digging they discover an underground tunnel. They enter into the tunnel and see that the walls are covered with a strange angular designs, like some kind of writing. What happens next?

I also like the idea of singing the entire novel in A and D. Or singing long short stories in A and D. Maybe 10 minute chapters at a time until you have 10 hour long story song.