An organist is a musician who plays the organ, a large musical instrument that produces sound by forcing air through pipes. Organists often perform in churches, concert halls, and other venues, showcasing their skills in various musical styles, including classical, jazz, and contemporary music. They may also accompany choirs or soloists, enhancing the overall musical experience. In addition to performance, organists may be involved in composing music or arranging existing pieces for the organ. They often have a deep understanding of music theory and may work with other musicians, such as conductors and choir directors, to create harmonious performances.