A self-contained rhythm section refers to a group of musicians whose instruments provide a steady beat and syncopated groove for a band or ensemble. Some synonyms for this term include autonomous percussion ensemble, self-sufficient groove section, and independent drumming group. These terms are used to describe a set of musicians who are able to play together seamlessly without relying on external cues to maintain timing or stay in sync with each other. Musical styles such as funk, jazz, and rock often require a strong, self-contained rhythm section to create the feel and structure of the music. These terms help to describe the importance of this foundational group of musicians in creating a cohesive sound and feel in a band.