While at the 2012 Telluride Bluegrass Festival in Colorado this June, Punch Brothers performed Rob Moose’s transcription of J.S. Bach’s Brandenburg Concerto No. 3 for bluegrass ensemble, with two violins. It was originally scored for three violins, three violas, three cellos, and harpsichord in the early 18th century.
Moose created the arrangement expressly for he and Punch Brothers, and it has only been seen live on a very few occasions. Fortunately it was captured in a quality video at Telluride by YouTube user, JambandsAustralia.
Not bluegrass, but mighty darned impressive.