His music can be compared to A Perfect Circle's through the ups and downs that can be felt by the ears and eardrum. Sometimes the orchestra has to play high notes or a type of music that when you hear it, it will make you feel good but as you are feeling amazing and imagining deer and unicorns running into the forest, the music changes 180 degrees to the dark and sad parts. (Suddenly Vampires come and eat the unicorns. And the deer...well, you know what happened..it was the hunting season.)
We can find lots of these ups and downs when listening to his symphonies but A Perfect Circle doesn't have much of these sudden ups and downs. Most of the times the whole song has the dark effect or mixed with some happy ones but sudden bumps are kind of rare. Some of the reasons can be that the rock bands won't usually play song that are 10 minutes long (only if we were comparing Beethoven to Pink Floyd, Atom Heart Mother or Echoes were great examples to use..23 minutes of awesomeness) and they usually don't have enough space (in minutes!) or can't come up with genius music that shows the ups and downs of the hills. (this doesn't mean that we should burn our APC albums) It just simply means that the bands of today have maybe lost touch with strung out emotion.
In conclusion, A Perfect Circle's music is closely related to Beethoven's, with the depressing and melodic voices of the songs. The singer of APC provides deep feelings through vocal talent, but doesn't seem to keep the length of Beethoven's symphonies.