Needless-to-say, the video and sound quality isn't great, but it's quite good enough to enjoy the performance of Craig Bierko as Harold Hill doing his best to woo Marian. The exuberant choreography here is by Susan Stroman, who also directed the show -- and who has won a remarkable 12 Tony Awards. (Among her many Broadway musicals, she directed and choreographed The Producers which won the most Tony Awards by a single show in a year -- also, as it happens, 12.)
The video cuts off right before the applause would have started. I suspect it got a lot. You can fill it in...