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
R-Evolve30 Seconds To Mars4:01A Beautiful Lie2005D Standardmute1970-01-01
REDOThe GazettE3:53Beautiful Deformity2013Custom Tuningmute1970-01-01
RIVER10-FEET4:24Realife2004E Standardmute1970-01-01
Rabbit HoleBlink1822:36California2016Drop Dmute1970-01-01
Ragged ToothProtest The Hero3:47Pacific Myth2016Custom Tuningmute1970-01-01
RatsMotionless In White3:58Graveyard Shift2017B Drop Amute1970-01-01
Re-arrangedLimp Bizkit4:43Significant Other1999C# Standardmute1970-01-01
Real Love (Single-Edit)Jody Watley3:01Larger Than Life1989E Standardmute1970-01-01
Reality Dream IIIRiverside5:05Second Life Syndrome2005Custom Tuningmute1970-01-01
RedemptionShadows Fall4:20Threads Of Life2007Drop Dmute1970-01-01
Reflections Of My LifeThe Marmalade4:18Reflections Of My Life1969E Standardmute1970-01-01
Reiwa Matching SedaiHANABIE.3:34Girl's Reform Manifest2021Drop Dmute1970-01-01
Remain IndoorsPeriphery6:13Periphery III: Select Difficulty2016Custom Tuningmute1970-01-01
RememberFlotsam And Jetsam3:48Drift1995E Standardmute1970-01-01
Remnants of the torturedAbominable Putridity3:11The Anomalies of Artificial Origin2012B Drop Amute1970-01-01