Wiktionary
filker
n. One who creates or performs filk music.
Usage examples of "filker".
I think filkers have a lot of engaging songs on the subject of space exploration, but it's only a fraction of what's out there.
I didn't want to fall into the self-fulfilling prophesy that plagues most filk projects that, “Only 500 filkers will ever buy it, so we can't afford to do a professional job.