There are multiple interpretations of the term "bulb music" depending on the context. Here are some possible meanings based on the search results:

• Light Bulb Music: This is an audio-visual performance that uses sounds generated by different light bulbs and electric devices. The performer, Michael Vorfeld, creates music by manipulating the light bulbs and the resulting sounds.

• Bulb: This is a personal project of Misha Mansoor, a musician who creates progressive metal music with an ambient, melodic sound. The term "bulb music" could refer to the music created by this artist.

It is unclear if there are other meanings of "bulb music" that are not covered by these search results.