On a recent Saturday morning in Karen and Peter Flint's spacious barn in the Brandywine Valley, nine harpsichord students and assorted auditors were listening intently as harpsichord virtuoso Arthur Haas, a professor at SUNY Stony Brook, explained the subtleties inherent in performing the music of Jean-Philippe Rameau (1683-1764).

WSJ: Restoration Hardware | By Heidi Waleson