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
Prelude	Uematsu, Nobuo			0:58	All Sounds of Final Fantasy I - II	1989	E Standard	mute	1970-01-01
Prologue Theme	Nobuo Uematsu			1:56	Final Fantasy IV	1988	E Standard	mute	1970-01-01
Prologue-Theme-(midi)	Nobuo Uematsu			1:56	Final Fantasy IV	1988	E Standard	mute	1970-01-01
Prom Night	Anamanaguchi			3:56	Endless Fantasy	2013	E Standard	mute	1970-01-01
Ramza's Theme	Hitoshi Sakimoto, Masaharu Iwata, Nobuo Uematsu			1:19	Final Fantasy Tactics OST	1997	E Standard	mute	1970-01-01
Raped By Elephants	Torsofuck			4:14	Erotic Diarrhea Fantasy	2004	Bb Standard	mute	1970-01-01
Rebel Army Theme (PSP Version)	Nobuo Uematsu			2:32	Final Fantasy 2 PSP	2007	E Standard	mute	1970-01-01
Red Cap Assault	Ashane			3:14	Final Fantasy Mystic Quest OST	2004	E Standard	mute	1970-01-01
Relax and Reflect	Yoko Shimomura			3:00	Final Fantasy XV OST	2016	E Standard	mute	1970-01-01
Ride On	Nobuo Uematsu			3:06	Final Fantasy VIII Original Soundtrack	1999	E Standard	mute	1970-01-01
Rufus's Welcoming Ceremony	Nobuo Uematsu			1:13	Final Fantasy VII	1997	E Standard	mute	1970-01-01
Runaway	Kanye West			9:12	My Beautiful Dark Twisted Fantasy	2010	Custom Tuning	mute	1970-01-01
Savior Of Souls - Battle Theme	Naoshi Mizuta			4:46	Lightning Returns Final Fantasy XIII Soundtrack.	2013	E Standard	mute	1970-01-01
Scars (feat. Florestan Durand)	LANDMVRKS			4:15	Fantasy	2018	Custom Tuning	mute	1970-01-01
Scenery of Spira	Nobuo Uematsu			2:52	"Final Fantasy X" Original Soundtrack, Disk 1	2001	E Standard	mute	1970-01-01