Thank you for your commitment to fair pay for musicians - it means a lot, even though the numbers are small. One thing you could do is google the song title or your best guess as to the title to see if there's an mp3 for sale - or better yet a CD, for the sound quality and liner notes if nothing else.
Most traditional musicians have very low sales, and I can tell you it's good to just to know someone is listening and buying our work.