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
Underneath The SkyOasis3:24The Masterplan1998E Standardmute1970-01-01
Underneath Your ClothesShakira3:46Laundry Service2001E Standardmute1970-01-01
Underneath Your PillowIt Bites5:28Eat Me in St Louis1989D Standardmute1970-01-01
Underneath the GunLimp Bitzkit5:50Results May Vary2003Custom Tuningmute1970-01-01
Understanding SilenceGood Tiger3:36A Head Full of Moonlight2015E Standardmute1970-01-01
Understanding in a Car Crash (Ramen's Ver)Thursday4:29Full Collapse2001Drop Dmute1970-01-01
UndertaleToby Fox6:24Undertale OST2015E Standardmute1970-01-01
Undertale Main ThemeToby Fox/Isac Saleh4:01Undertale OST2018E Standardmute1970-01-01
Undertale MedleyToby Fox28:42Undertale Medley2015E Standardmute1970-01-01
UndertowPain Of Salvation4:56Remedy Lane2002Drop Dmute1970-01-01
UndertowSara Bareilles4:48Careful Confessions2004E Standardmute1970-01-01
Underwater GardenSepticflesh6:51Mystic Places Of Dawn1994D Standardmute1970-01-01
UnderwearRoyal Republic2:05We Are The Royal2010E Standardmute1970-01-01
UnderworldEvile4:17Skull2013Eb Standardmute1970-01-01
UnderworldSymphony X5:51Underworld2015D Standardmute1970-01-01