Contusion by Stevie Wonder is an instrumental track that showcases his exceptional skills in musical composition and arrangement. The song features complex rhythms, intricate melodies, and a blend of jazz, funk, and rock influences. As an instrumental piece, it does not use lyrics to convey its message; instead, it relies on the emotive power of music to evoke feelings and set a mood. Key themes include musical exploration, creativity, and technical prowess, making it a vibrant and dynamic addition to Stevie Wonder's repertoire.