Not made by me. I stole it a while back from the Japanese Website:
Melody
o5l1v14r8.r16<<ab>cd<abaal4aaaal16a8aaa8aaa8aaa8aab8bbb8bbb8bbb8bb>c8ccc
8ccc8ccc8ccd8ddd8ddd8ddd8ddc8ccc8ccc8ccc8ccd8ddd8ddd8ddd8dd<f8fff8fff8
fff8fff8fff8fff8fff8ffa8aaa8aaa8aaa8aag8ggg8ggg8ggg8ggf8fff8fff8fff8ff
>d8ddd8ddd8ddd8ddc8ccc8ccc8ccc
Chord 1
o5r16v13l8r.<arara8.a16arbrbrb8.b16br>crcrc8.c16crdrdrd8.d16dr<arara8.a1
6arbrbrb8.b16brarara8.a16ararara8.a16ar1>>l16r8c1c-2d2c1e4.c-2&c-8<f1.
>c-2<f1f1l16<e2.V12e8eee2.d8ddf2.f8fff2.f8fff2.f8ffd2.d8dde2.e8eee2.
Chord 2
V15L16AB>CDE2.&E8DED8.A8.G8F4GFEDE2l8gab>cd2c4<b8l16bga1F+2A4D4G1B1&b2
&b4.l16CDE2.&E8DED8.A8.G8F4fedcl4E.g8raf+.d2&d8<a8.>c8.e.g8e8f+.d2&d8<
a2&a.b16b+16a1>>e2.ce1d2g2d1c2<a>cc-g2.<
or 3MLE/Clipboard version :
MML@rv14l1<ab>cd<abaal4aaaaa8l16aaa8aaa8aaa8aab8bbb8bbb8bbb8bb>c8ccc8ccc8ccc8ccd8ddd8ddd8ddd8ddc8ccc8ccc8ccc8ccd8ddd8ddd8ddd8dd<f8fff8fff8fff8fff8fff8fff8fff8ffa8aaa8aaa8aaa8aag8ggg8ggg8ggg8ggf8fff8fff8fff8ff>d8ddd8ddd8ddd8ddc8ccc8ccc8ccc,rv13l8arara.a16arbrbrb.b16br>crcrc.c16crdrdrd.d16dr<arara.a16arbrbrb.b16brarara.a16ararara.a16ar1rl1>b+b2>d2ce4.<b2&b8f.b2ff<e2.v12e8l16eee2.d8ddf2.f8fff2.f8fff2.f8ffd2.d8dde2.e8eee2.,v15l16ab>cde2.&e8ded8.a8.g8f4gfede2l8gab>cd2c4<bl16bga1f+2a4d4g1b1&b2&b4.cde2.&e8ded8.a8.g8f4fedcl4e.g8raf+.d2l8&d<a.>c.e4.gef+4.d2&dl2<a&a4.b16b+16a1>>e.c4e1dgd1c<a4b+4b4>g.;
FYI it's not the full version.
P.S. Dark Knights have their own theme song too (Cutscene 13)