6780 has been on since at least 1845 with a wide variety of music and comedy skits. I've heard everything from music by the Fugs to hiphop music, the theme to the Fat Albert cartoon, and "Three is a magic number" from Schoolhouse Rock. The signal varies widely from excellent to just above the noise floor. There have also been extended periods of open carrier; perhaps the op is relaying a webcast and is losing connection occasionally. Audio quality is excellent.