the song is Disembodied Pt 2 by Buckethead
and from the first time i heard it i can't get it out of my head.
it is a classical inspired song (at most points).
And i want to practice and write this type of music


he changes at 0:37
and then suddenly at 1:29
and ends with a very cool solo at 2:18

is there a certain key or scale pattern that I can practice to learn these type of songs?