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
Power Lines	Telekinesis			4:06	Dormarion	2013	E Standard	mute	1970-01-01
Public Enemy No. 1	Rory Gallagher			3:49	Top Priority	1979	E Standard	mute	1970-01-01
RIOT	RAISE A SUILEN			5:09	RIOT	2018	Drop D	mute	1970-01-01
Race wish	HIZAKI			4:44	Rosario	2016	Eb Drop Db	mute	1970-01-01
Rainbow	Lee Ritenour			5:51	Rio	1979	E Standard	mute	1970-01-01
Rainbow Road	Nintendo			2:35	Mario Kart 8	2014	E Standard	mute	1970-01-01
Ratrace	Skindred			3:21	Roots Rock Riot	2007	D Drop C	mute	1970-01-01
Reach	Skillet			3:26	Victorious	2019	Drop D	mute	1970-01-01
Reconquista	Tierra Santa			4:03	Legendario	1999	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
Remove Your Mask	Wolfmother			4:00	Victorious	2016	E Standard	mute	1970-01-01
Revelation	Joe Satriani			6:00	Professor Satchafunkilus And The Musterion Of Rock	2008	E Standard	mute	1970-01-01
Revelation	Joe Satriani			5:59	Professor Satchafunkilus and the Musterion of Rock	2008	E Standard	mute	1970-01-01
Ricco Harbor	Koji Kondo			3:06	Super Mario Sunshine Original Soundtrack	2002	E Standard	mute	1970-01-01
Rise Up	Skillet			4:01	Victorious	2019	B Drop A	mute	1970-01-01