Notes on the Program By Aaron Grad Keyboard Concerto in D Minor after A. Marcello, BWV 974 JOHANN SEBASTIAN BACH Born March 21, 1685 in Eisenach, Germany Died July 28, 1750 in Leipzig, Germany While working as the court organist for a prince in Weimar, Germany, Bach created a series of transcriptions that allowed Italian concertos to be played on a harpsichord. It was a time of rapid development for the solo concerto, with most of the progress taking place in Venice and other northern Italian cities, and Bach benefited from access to unpublished manuscripts of recent works that the prince brought back from travels abroad. Assembling and performing such a trove of virtuosic harpsichord music surely made Bach’s patron happy—especially since it coincided with a time when the court organ was out of commission for upgrades—and it also allowed Bach to dissect the Italian concerto style that he came to adopt his own. A number of Bach’s transcriptions start with Vivaldi as the source material, but this example in the key of D minor departs from an Oboe Concerto by a lesser-known musician from Venice, Alessandro Marcello. Bach’s arrangement of the opening movement captures the concerto’s strong contrast between robust orchestral statements and flowing solo episodes, adjusting the density and range of the keyboard part to make up for the harpsichord’s lack of dynamic control. The understated pulsing of the Adagio transfers quite effectively to the keyboard, and the right hand uses ample ornaments to let the melody approximate an oboe’s sustained breath. In the concluding Presto, Bach’s restless part for the left hand generates far more propulsion than Marcello’s blocky bass line, showing that Bach was not just imitating but elevating the Italian style he loved so much. Variations on a Theme of Corelli, Op. 42 [1931] SERGEI RACHMANINOFF Born April 1, 1873 in Oneg, Russia Died March 28, 1943 in Beverly Hills, California Rachmaninoff composed his final score for solo piano, the Variations on a Theme of Corelli, in the summer of 1931. The theme he used, known as “La Folia,” came from a legendary violin sonata published in 1700 by Arcangelo Corelli, the violinist and composer who reshaped instrumental music for small and large groups from his perch in Rome. Corelli, however, did not invent the “Folia” theme; Jean-Baptiste Lully had notated the same chord progression several decades earlier, and the music had existed in oral traditions long before that, going back to a fifteenth-century dance tune from Portugal. The telltale harmonic skeleton of “La Folia” rolls out in the opening phrases,