A fugue's main melody is called its "subject". Maestro George Marriner Maull explores different subjects using Bach's Brandenburg Concerto No. 4 performed by The Discovery Orchestra and Bach's Unaccompanied Sonata No. 1 performed by violinist Katie Liu.

Originally released by The Discovery Orchestra, 2014. Streaming video file encoded with permission for digital streaming by Infobase on July 03, 2023.