While studying in Italy Thomas Roseingrave became a disciple of Domenico Scarlatti, but in his own keyboard music he developed a personal gift for bold harmonies and modulations into a style that confounded his contemporaries and retains its novelty to this day. He was the first organist of St George’s, Hanover Square, until mental illness overshadowed his professional life. His keyboard music remains among the most intriguing oeuvres of any 18th-century British composer.