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
On A Plain (Live At The Paramount)	Nirvana			2:51	Live At The Paramount	1991	Drop D	mute	1970-01-01
On a Plain (Unplugged)	Nirvana			3:31	MTV Unplugged in New York	1993	Eb Drop Db	mute	1970-01-01
Paper Cuts	Nirvana			4:07	Bleach	1989	Eb Standard	mute	1970-01-01
Pen Cap Chew	Nirvana			3:05	With the Lights Out (Disc 1)	2004	Eb Standard	mute	1970-01-01
Pennyroyal Tea	Nirvana			3:38	In Utero	1993	Eb Standard	mute	1970-01-01
Plateau	Nirvana			3:42	MTV Unplugged In New York	1993	Eb Standard	mute	1970-01-01
Polly	Nirvana			2:57	Nevermind	1991	E Standard	mute	1970-01-01
Polly (New Wave)	Nirvana			1:51	Incesticide	1992	E Standard	mute	1970-01-01
Polly (Unplugged)	Nirvana			3:12	Unplugged In New York	1993	Eb Standard	mute	1970-01-01
Radio Friendly Unit Shifter	Nirvana			4:56	In Utero	1993	Eb Standard	mute	1970-01-01
Rainbow Chaser	Nirvana			2:36	Rainbow Chaser	1968	E Standard	mute	1970-01-01
Rape Me	Nirvana			2:55	In Utero	1993	Eb Standard	mute	1970-01-01
Return of the Rat	Nirvana			3:12	With The Lights Out (Disc 2)	2004	Eb Standard	mute	1970-01-01
Sappy	Nirvana			3:29	With The Lights Out 3	2004	E Standard	mute	1970-01-01
Scentless Apprentice	Nirvana			3:53	In Utero	1993	Eb Drop Db	mute	1970-01-01