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
RecklessAustralian Crawl5:26Semantics1983E Standardmute1970-01-01
ReckonerRadioheadBass2 4:50In Rainbows2007E Standardmute1970-01-01
ReconquistaTierra Santa4:03Legendario1999E Standardmute1970-01-01
Recuerdos de la AlhambraFrancisco Tárrega2:45Francisco Tárrega2017E Standardmute1970-01-01
RedMotograter3:49Motograter2003Drop Dmute1970-01-01
Red CriminalTHE ORAL CIGARETTES4:40Red Criminal2021Eb Drop Dbmute1970-01-01
Red Frame White LightOrchestral Manoeuvres In The Dark3:13Souvenir The Singles 197920191979E Standardmute1970-01-01
Red Hot MoonRancid3:38Indestructible2003E Standardmute1970-01-01
Red Madness And My DesireDraw the Emotional2:38Funny party in the Fog2011D Drop Cmute1970-01-01
Red Streamer BattleYoshito Sekigawa, Shoh Murakami, Yoshiaki Kimura, Hiroki Morisihita, Fumihiro Isobe2:50Paper Mario: The Origami King Original Soundtrack2020D Standardmute1970-01-01
Redeemer of FleshRose Funeral4:02The Resting Sonata2009Bb Drop Abmute1970-01-01
RedoKara Hajimeru Isekai Seikatsu4:21-2016E Standardmute1970-01-01
Reel It InZe Gran Zeft3:39Gorilla Death Club2019Custom Tuningmute1970-01-01
Reelin'Iration4:41Hotting Up2015E Standardmute1970-01-01
RefugeRage3:41The Missing Link1993Eb Standardmute1970-01-01