ShredDB is an experimental .shred library, I removed the audio so it's pretty useless. You can find the source .psarc files here.

Song	Artist	Play	Shred	Length	Album	Year	Tuning	Uploader	Updated	Delete
Ninja Gaiden	Minibosses			4:12	Brass	2005	E Standard	mute	1970-01-01
Ninja Gaiden - Act 4 Stage 2	Ninja Gaiden - Act 4 Stage 2			2:54	Ninja Gaiden - Act 4 Stage 2	1986	E Standard	mute	1970-01-01
Ninja Gaiden 1 Medley	Keiji Yamagishi			1:32	Ninja Gaiden 1	1988	E Standard	mute	1970-01-01
Ninja Gaiden 2 Intro	Mayuko Okamura			1:35	Ninja Gaiden 2	1990	E Standard	mute	1970-01-01
Ninja Gaiden II Soundtrack Battling Precariously 2-2, 4-2, 5-1a,7-2	Ninja Gaiden II Soundtrack Battling Precariously 2-2, 4-2, 5-1a,7-2			4:09	Ninja Gaiden II Soundtrack Battling Precariously 2-2, 4-2, 5-1a,7-2	1988	E Standard	mute	1970-01-01