Contemporary and lyrical dance are closely related dance styles both with a strong classical dance technique foundation. Contemporary dance combines the strong controlled leg work of ballet with modern dance characteristics that stresses the torso. Contemporary routines often use unpredictable changes in rhythm, speed and direction. Lyrical dance embodies various aspects of ballet, jazz, acrobatics and modern dance where movements are elongated. It is strongly associated with clearly displayed emotional moods, fast-moving choreographic strategies that emphasise the virtuosic display and illustrations of song lyrics.