Marian Thomas founded the Westport Brown Bag Concert Series, and directed it for twenty-one years. She built and decorated her two-keyboard French harpsichord, which is patterned after a Paul Taskin French instrument from 1750, using a Frank Hubbard kit. Using the knowledge she gained from working at the Hubbard Harpsichord Workshop in Massachusetts, she maintains and tunes harpsichords in the Kansas City area. Mrs. Thomas has a piano studio at her home, and also teaches harpsichord.