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
Snowdin Town	Toby Fox			1:23	Undertale	2015	E Standard	mute	1970-01-01
Spear of Justice	Toby Fox			2:00	Undertale Soundtrack	2015	BEADG	mute	1970-01-01
Spider Dance	Toby Fox			1:49	Undertale	2015	E Standard	mute	1970-01-01
Spider Dance	Toby Fox			1:53	Undertale	2015	E Standard	mute	1970-01-01
Tem Shop	Toby Fox			0:48	Undertale	2015	E Standard	mute	1970-01-01
The World Revolving	Toby Fox			3:25	Deltarune Chapter 1	2019	Drop D	mute	1970-01-01
Undertale	Toby Fox			6:24	Undertale OST	2015	E Standard	mute	1970-01-01
Undertale Main Theme	Toby Fox/Isac Saleh			4:01	Undertale OST	2018	E Standard	mute	1970-01-01
Undertale Medley	Toby Fox			28:42	Undertale Medley	2015	E Standard	mute	1970-01-01
Welcome to the City	Toby Fox			2:04	Deltarune	2021	E Standard	mute	1970-01-01
Your Best Nightmare Finale Metal ver.	Toby Fox			5:27	Undertale	2015	Custom Tuning	mute	1970-01-01