At the great monastery of El Escorial near Madrid, in the mid-1700s, a young Spanish priest named Antonio Soler used to teach music to His Most Serene Highness the Infante of Spain, Don Gabriel de Borbón. For the Infante's further diversion, Father Soler specially composed six sprightly duo-organ concertos. At their first U.S. performance last week, by Organist E. Power Biggs and Composer-Harpsichordist Daniel Pinkham, the concertos proved just as happily diverting to a modern audience as they must have been in Don Gabriel's day.
For the concert, Harvard University's Busch-Reisinger Museum provided its new Dutch-built Flentrop tracker organ, the only one...