The integral of
sin(2cosx)- pi^2x
where x is any pitch found in just temperament, and the range that of a 6 foot grand piano.
That should provide you many interesting pitches IF you can find a 6 foot grand in just temperament (or go thru the trouble of adjusting the equal temperament to just)
4 Replies and no one has mentioned Debussy ?
Prokofiev Sonatas are very powerful, Concerts too.
But I re-vote for Scriabin and Chopin, I'm afraid I don't like Liszt, is Circus music to me (hold the fire here eh!! )