Jive has a bouncy swing time signature of 4/4 (or 12/8), as does lindyhop, whereas rock'n'roll is typically more binary (8/8) in rhythm. A wide range of tempos are used: from a very slow 30 bars (120 beats) per minute or less, through a competitive 42 bars (168 beats) per minute up to 50 bars (200 beats) per minute or more for fast rock.