Andrew Ball, the music consultant for "Master Class", took a First in Music at Queen's College, Oxford. He is a professor at the Royal College of Music and was made a Fellow in 2006.
Father Gregory's church, where Zoe played the organ, is aptly named for St. Cecilia, the patron saint of musicians.
The white station wagon seen on Sir Michael's estate is a 1956 Cadillac Custom Viewmaster. Between 1955 and 1956 the American custom car body builder Hess & Eisenhardt built approximately 19 special examples, of which only seven still existed as of 2018.
Zoe plays the cantabile from Beethoven's Piano Sonata #8 during one scene. Billy Joel used this same part as the melody for the chorus of his 1984 song "This Night" from the album "An Innocent Man".