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
Rebuild, Recreate	Dream State			5:03	Consequences	2015	Eb Drop Db	mute	1970-01-01
Rebuild, Release	Sent By Ravens			2:54	Mean What You Say	2012	D Drop C	mute	1970-01-01
Recession Blues	BB King			2:23	BB King Wails	1958	E Standard	mute	1970-01-01
Reckless Abandon	Blink-182			3:16	Take Off Your Pants and Jacket	2001	E Standard	mute	1970-01-01
Reconsider Baby	Eric Clapton			3:25	From the Cradle	1994	E Standard	mute	1970-01-01
Record Body Count	Rheostatics	Bass2		1:57	Melville	1991	E Standard	mute	1970-01-01
Recuerdos de la Alhambra	Francisco Tárrega			2:45	Francisco Tárrega	2017	E Standard	mute	1970-01-01
Red Baron	Billy Cobham			6:42	Spectrum	1973	E Standard	mute	1970-01-01
Red Berry Joy Town	The Wonder Stuff			2:55	Eight Legged Groove Machine	1988	E Standard	mute	1970-01-01
Red Blue Yellow Battle Music	Pokemon			4:12	GameBoy	1996	E Standard	mute	1970-01-01
Red Bomb	Whiplash			5:20	Power And Pain	1985	Eb Standard	mute	1970-01-01
Red Bull & Hennessy	Jenny Lewis			4:51	On The Line	2019	E Standard	mute	1970-01-01
Red Eyes, Black Skies	Black Tusk			3:49	Taste The Sin	2010	D Drop C	mute	1970-01-01
Red Pepper Blues	Art Pepper			3:41	Art Pepper Meets The Rhythm Section	1957	E Standard	mute	1970-01-01
Red Streamer Battle	Yoshito Sekigawa, Shoh Murakami, Yoshiaki Kimura, Hiroki Morisihita, Fumihiro Isobe			2:50	Paper Mario: The Origami King Original Soundtrack	2020	D Standard	mute	1970-01-01