ASCAP samples - just in case it isn't clear; my music is published through my ASCAP affiliated company. ASCAP tracks "airplay" and calculates royalty payments by sampling the radio waves - and that is done mostly in the mainstream markets.

That means that mainstream media outlets get the most attention, and mainstream airplay and live performance is calculated, presumably with a good deal of accuracy. The folks like me who live on the left end of the radio dial do not get much attention from these samples. Folk and Celtic radio is not a major contributor to the airwaves gene pool, it seems!