Bid on a pair of tickets to a concert of your choice in the  Aston Magna Summer Festival at Saint James Place in Great Barrington.

http://astonmagna.org/

"The mission of the Aston Magna Foundation is to enrich the appreciation of music of the past and the understanding of the cultural, political, and social contexts in which it was composed and experienced.

The goal is to reach a larger public through the use of historical instruments and practices in performances, recordings, and workshops, and through innovative interdisciplinary educational programs, publications, and electronic media."