Well, this here is an infamous late night TV commercial, what they call informercials now but back then was just “late night TV”. There were two minute up to 1/2 hour presentations of Zamfir and his pan flute.
And.. actually, it was good. At least still sounds good to me. AT least in the commercial it sounds good.
It probably played for a good 15 years or so, from the 1980s through the mid 90s or so, from media ranging from 8-track to records to CDs. I suspect at some point they stopped.