System and method for combining a song and non-song musical content

A computer program product for following a first song recording with an advertisement, the computer program product comprising computer executable code stored in a non-transitory memory that, when executing on one or more computing devices, performs the steps of:

• accessing metadata for a first song recording being rendered on a music playback device;
• accessing a voice-over content item created for use in an advertisement played following the first song recording, the voice-over content item including a spoken advertisement produced without music;
• selecting a non-song musical content item for use in the advertisement based on a similarity between the first song recording and the non-song musical content item, the non-song musical content item including accompanying music expressly created for advertisements;
• combining the voice-over content item and the non-song musical content item into an advertisement for playback after the first song recording;
• and
• in response to determining that the first song recording is at or near its end of playback, transitioning to the advertisement.