<p>[Problem] To output music according to speech that has been input. [Solution] Provided is a music playback program that causes a computer to execute: a speech acquisition step for acquiring speech input; a character string detection step for detecting whether any registered character string of a plurality of registered character strings that have been stored in a storage medium is included in the speech; and a music output step for outputting music corresponding to the registered character string detected in the character string detection step after a delay time stored in the storage medium has elapsed from when the speech containing that registered character string was acquired.</p>
