I have been known to sing along with the band on a fiddle tune now and then. One of the bands that I used to work with played tunes that most bands didn't play. I would often be asked by the band to sing along as they played "Waltz Across Texas". This was usually well received by the dancers. Some would join in on the chorus. The band and I usually sang along with "Just Because" when it was used as a polka. The dancers seemed to appreciate our playfulness. I have also, rarely, sung along to Petronella. Then, there are the times when a band didn't show up, or I was asked to call with no notice. I have had to sing and hum for several dances over the years. John B. Freeman, SFTPOCTJ