An orchestra provides captions for videos of performances. In addition to capturing dialog and lyrics verbatim, captions identify non-vocal music by title, movement, composer, and any information that will help the user comprehend the nature of the audio. For instance captions read,

"[Orchestral Suite No. 3.2 in D major, BWV 1068, Air]
[Johann Sebastian Bach, Composer]
♪ Calm melody with a slow tempo ♪"