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
Redshift Riders	Joe Satriani			4:53	Super Colossal	2006	E Standard	mute	1970-01-01
Refuge	Jake Howsam Lowe			5:25	Oh Earth	2019	Eb Standard	mute	1970-01-01
Reign Of Terror	Sabaton			3:54	Primo Victoria	2005	E Standard	mute	1970-01-01
Reimei	Sayuri x MY FIRST STORY			5:16	Golden Kamuy Season 2 OP	2018	Eb Standard	mute	1970-01-01
Reincarnated Soul (Rock Version)	Yasushi Asada			3:37	Castlevania Bloodlines (Sega Genesis)	1993	E Standard	mute	1970-01-01
Reincarnation	Masakazu Sugimori			2:23	Ghost Trick Phantom Detective	2011	E Standard	mute	1970-01-01
Relatos Salvajes (Wild Tales)	Gustavo Santaolalla			1:33	Soundtrack	2014	Eb Standard	mute	1970-01-01
Remember	Flotsam And Jetsam			3:48	Drift	1995	E Standard	mute	1970-01-01
Repined Bastard Nation	Satyricon			5:49	Ten Horns Ten Diadems	2002	Custom Tuning	mute	1970-01-01
Resident Evil 2 Ending Theme B	Masami Ueda			2:37	Resident Evil 2 OST	1998	E Standard	mute	1970-01-01
Resident Evil 3 Credits	Masami Ueda , Saori Maeda			2:10	Resident Evil 3	1999	E Standard	mute	1970-01-01
Resist And Bite	Sabaton			3:29	Heroes	2014	Custom Tuning	mute	1970-01-01
Resist And Bite	Sabaton			3:35	Heroes	2014	Custom Tuning	mute	1970-01-01
Restless	Breakdown of Sanity			3:13	Coexistence	2016	B Drop A	mute	1970-01-01
Resurrection Code	Disarmonia Mundi			4:25	Mind Tricks	2006	Custom Tuning	mute	1970-01-01