A rhythmic pattern is a repeating sequence of notes and rests that form the basis of a musical composition. Rhythmic patterns are made up of short phrases that combine to make longer phrases, much like a spoken language. They occur within the framework of meter, which is simply a repetitive pattern of strong and weak beats. The meter of a song is indicated by its time signature, which consists of two numbers stacked one on top of the other. The top number represents the number of beats per measure, while the bottom number represents the note value for each beat. Rhythmic patterns can be simple or complex and can be used in a variety of musical styles. They are an important aspect of music and play a role in determining the feel and groove of a song. Rhythmic motifs are often used to create a sense of unity and coherence in a piece of music. They can be used to establish a rhythmic foundation for the rest of the composition and can be developed and varied throughout the piece to add interest and complexity.