Rhythm refers to the pattern of sounds and silences in music and poetry. It is created by the arrangement of different note lengths and rests, giving a piece its flow and movement. Rhythm can evoke emotions and set the mood, making it a crucial element in both musical compositions and spoken word. Meter is the structured organization of rhythm into regular patterns, often defined by the number of beats in a measure. Common meters include 4/4 and 3/4, which indicate how many beats are in each measure and what type of note gets the beat. Together, rhythm and meter form the backbone of musical and poetic works.