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
REAL EXISTENCEBAND-MAID4:10New Beginning2015Drop Dmute1970-01-01
ROXANNEArizona Zervas2:50ROXANNE2019E Standardmute1970-01-01
Race to ExtinctionAccept5:29The Rise Of Chaos2017E Standardmute1970-01-01
Radium Eyes (GH2 Mix)Count Zero3:36Guitar Hero 22006Drop Dmute1970-01-01
Radix MalorumGorgoroth3:17Instinctus Bestialis2015C# Standardmute1970-01-01
Rainbow BoxRiverside3:40Rapid Eye Movement2007E Standardmute1970-01-01
Rapper's Delight (extended)Sugarhill Gang14:34Rapper's Delight1979E Standardmute1970-01-01
Rapture in ExileDarkest Hour2:14Darkest Hour (Self-titled)2014D Drop Cmute1970-01-01
Ready To Go (Single Mix)Republica3:41Republica1996E Standardmute1970-01-01
Red PhoenixFaceless Clown5:07No name2015D Standardmute1970-01-01
Reinventing Your ExitUnderoath4:27They're Only Chasing Safety2004Drop Dmute1970-01-01
RelaxFrankie Goes to Hollywood3:58Welcome to the Pleasuredome1983E Standardmute1970-01-01
Relax (Backing Track)Frankie Goes to Hollywood3:53Welcome To The Pleasuredome1983E Standardmute1970-01-01
Relax and ReflectYoko Shimomura3:00Final Fantasy XV OST2016E Standardmute1970-01-01
Residents (Propagator Extermination in Space)Nobuo UematsuCombo Combo2 3:09FF8 OST1999E Standardmute1970-01-01