Well, my previous few puzzles have been too hard, so I've done my best to avoid that this time. If this one is too easy then let me know! :)
This is a multi-part puzzle.
We start with a riddle:
I am thought and I am memory;
I create the world; I free men and I free women.Black wings by the pallid tower,
I sit at the head of Pallas.I am Bran and I am Bartholomew;
I protect Vincent and I protect Damien.
This is the first riddle I've ever written so please be kind! I've tried to make it fairly easy to get the basic idea but fairly hard to track down all the references (a full answer will need to explain all the references).
The answer from that riddle will lead you to a classic and well-known written work which is available free online in many places. You can use that to solve this cryptogram:
1;4;1
17;3;1
18;1;1
2;6;1
15;1;1
18;5;1
14;4;1
13;6;1
15;4;1
7;3;1
11;1;1
16;1;1
16;1;2
16;1;3
7;5;25
16;5;-1
11;3;1
13;1;1
5;4;1
6;4;1
9;4;1
14;2;1
15;6;9
15;6;10
15;6;11
15;6;12
15;6;13
The cryptogram's answer will give you a piece of music; that piece of music is the answer to the puzzle.
Have fun! :)
Thank you @luxmi12, with an assist from @Len, for the excellent answer! I've marked it as solved because, well, basically you solved it, but there are a few clues still unaccounted-for, so if anyone else wants to chip in with a solution to them then go right ahead!
They are:
Title: 'dark' (quite obvious), 'progressive'
"I free men and I free women"
"pallid tower" (specifically?)
"Bran": not intended as a reference to Game of Thrones, although the scriptwriters there pretty clearly had the same idea in mind as I did.