The soundtrack has been described as jazz, but as if it were stylized in 1920s-era China. Its tone has been described as being more mature and unique from the soundtrack of Avatar: The Last Airbender. The Track Team wanted a more in-depth exploration of instruments and as a result, the music is a little more sparse in the number of instruments playing at once. The new soundtrack takes advantage of Eastern and Western live instruments, digital sound design, and Chinese instrumentalist Wang Hong, who is proficient in over twenty ethnic instruments.