The cache is not at the posted coordinates, but it doesn't surprise you, right?
<< George Bush Park and Bear Creek Park have been puzzle paradise for years. Here's my humble addition. >>
Most people think that music is a complete opposite of "exact sciences", that it's based on pure inspiration. While true to some extent, there is a lot of underlining mathematics in pretty much any piece of music that is not a progression of random pitches. For many centuries music (at least in Europe) was considered one of God's creations, a way to comprehend the perfection and harmony of the world—along with mathematics.
Musicologists are deciphering those underlying principles. Some musicology papers are as complex as those on cosmology or physics! Here's one example from the web:
Moreno Andreatta, Carlos Agon, Thomas Noll, Emmanuel Amiot. Towards Pedagogability of Mathematical Music Theory: Algebraic Models and Tiling Problems in computer-aided composition. Bridges. Mathematical Connections in Art, Music and Science, Aug 2006, London, United Kingdom. pp.277-284, 2006. Available here.
Sometimes composers encoded some kind of a message in their works—knowing that only a selected few intellectuals could understand it. I don't know if any composer ever encoded coordinates in their music, but I did exactly that in this little piece for piano. You are welcome to listen to it, performed but your humble servant NB.
Please remember that chords are traditionally read bottom to top.
If you ever studied music it might give you some advantage. If not, a small amount of googling will give you all the necessary information.
The final is somewhat off the beaten path, but the area is not overgrown and it isn't a strenuous hike. Also, this part of the park is usually dry even when there's some flooding going on elsewhere.
The cache is in the V of a forked pine tree. Please bring some swag to trade!
You can validate your puzzle solution with certitude.