An electronic musical apparatus which makes it possible to execute functions provided in advance in the electronic musical apparatus. Contents data including link information indicative of a link to a file in which at least one command for executing at least one predetermined function provided in the electronic musical apparatus is written is acquired. A predetermined screen is displayed based on the acquired contents data. The file linked by the link information is acquired when a user performs a predetermined operation on the link information presented on the displayed predetermined screen. At least one command written in the acquired file is interpreted, and the electronic musical apparatus is controlled to execute at least one predetermined function indicated by the interpreted command.