Rhythm
Succession of durations
Accent
Stress beat
Meter
Regular grouping of beats by accent (difficult to hear)
Duple meter
Groups of 2 beats
Triple meter
Groups of 3 beats
Quadruple meter
Groups of 4 beats
Simple
Divides beat into 2
Compound
Divides beat into 3
Ametric
No identifiable grouping of beats
Syncopation
Unexpected accents (contradicting meter)
Tempo
How fast/low the beat is perceived
Rubato
Term of music that does not have a strictly steady beat