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
Rainier Fog	Alice In Chains			5:11	Rainier Fog	2018	Eb Standard	mute	1970-01-01
Reckoner	Radiohead	Bass2		4:50	In Rainbows	2007	E Standard	mute	1970-01-01
Red Giant	Alice In Chains			5:35	Rainier Fog	2018	Eb Drop Db	mute	1970-01-01
Rejoice	Julien Baker			3:36	Sprained Ankle	2015	Drop D	mute	1970-01-01
Rhythm of the Rain	The Cascades			2:27	Rhythm of the Rain	1962	E Standard	mute	1970-01-01
Rock na Kimi to wa Owakare Da	Tuyu			3:31	It's Raining After All	2020	B Standard	mute	1970-01-01
Saikou!	Poppin'Party			3:51	Double Rainbow/Saikou	2019	E Standard	mute	1970-01-01
Search Lights	Oz			3:18	Fire in the Brain	1983	Eb Standard	mute	1970-01-01
Self Portrait	Rainbow			3:16	Ritchie Blackmore's Rainbow	1975	E Standard	mute	1970-01-01
Serre-moi	Tryo			3:52	Grain de Sable	2003	E Standard	mute	1970-01-01
Servitude	Fishbone			5:28	Give A Monkey A Brain And He'll Swear He's The Center Of The Universe	1993	E Standard	mute	1970-01-01
Seventeen	Four Year Strong			3:30	Brain Pain	2020	D Standard	mute	1970-01-01
Shake Your Tail	My Little Pony			2:03	Rainbow Rocks	2014	E Standard	mute	1970-01-01
Shoot Me, Take You	CROW'SCLAW			5:01	Over the Rainbow	2010	Eb Drop Db	mute	1970-01-01
Silence Kit	Pavement			3:04	Crooked Rain Crooked Rain	1994	Custom Tuning	mute	1970-01-01