Rachmaninov, Sergei (1873–1943)
raga
ragtime
raja
rallentando
rap
rattle and shaker
Ravel, Maurice (1875–1937)
recorder
recording engineer
recording studio
reed
reggae
register
relative minor scale
release
Renaissance music
repeat marks
repertoire
resolution
resonance
resonant frequency
rest
resultant tone
reverberation
rhythm
rhythm and blues
rhythm guitar
rhythm section
ribbon microphone
ricercare
riff
Rimsky-Korsakov, Nikolai (1844–1908)
ritardando
ritenuto
rock
rock 'n' roll
rockabilly
rococo
roll
Romantic
rondeau
rondo
root note
Rossini, Gioacchino (1792–1868)
rubato