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
RebellionDaisuke Ishiwatari4:10BlazBlue Original Soundtrack2008Eb Standardmute1970-01-01
Rebirth The EdgeShade2:45Sengoku Rance Soundtrack2006D Drop Cmute1970-01-01
Reclaimed EarthAndrew Hulshult12:07DOOM: Eternal - The Ancient Gods Part II (Original Game Soundtrack)2021Custom Tuningmute1970-01-01
RecreantChelsea Grin4:30Desolation of Eden2010B Drop Amute1970-01-01
Red Flag Day (Live)U23:36U2 Live Songs of eXPERIENCE2019E Standardmute1970-01-01
Red Frame White LightOrchestral Manoeuvres In The Dark3:13Souvenir The Singles 197920191979E Standardmute1970-01-01
Red Hot Skull (Red Mountain 2)Sonic Adventure3:18Sonic Adventure Soundtrack1998E Standardmute1970-01-01
Red Light In My Eyes (Part 1)Children Of Bodom4:33Something Wild1997C# Standardmute1970-01-01
Red Light In My Eyes Part 2Children Of Bodom3:53Something Wild1997C# Standardmute1970-01-01
Red Like RosesJeff Williams3:16RWBY Volume 1 Soundtrack2012Drop Dmute1970-01-01
Red Like Roses Part IIJeff Williams4:05RWBY Volume 1 Soundtrack2013E Standardmute1970-01-01
Red Streamer BattleYoshito Sekigawa, Shoh Murakami, Yoshiaki Kimura, Hiroki Morisihita, Fumihiro Isobe2:50Paper Mario: The Origami King Original Soundtrack2020D Standardmute1970-01-01
Redeemer Of SoulsJudas Priest4:01Redeemer of Souls2014E Standardmute1970-01-01
Redeemer of FleshRose Funeral4:02The Resting Sonata2009Bb Drop Abmute1970-01-01
RedshiftDestinity3:59Resolve In Crimson2012C# Standardmute1970-01-01