Johann Sebastian Bach

Johann Sebastian Bach was a German composer. He was born in 1685 and died in 1750. (AUDIO: The Entropy Composition)

BOSS sang Brandenburg Concerto No. 3 in G. (TV: The Green Death)

The Fourth Doctor played out Badinerie, Orchestral Suite No. 2 in B minor on his reed flute. (TV: The Power of Kroll)

After fixing his TARDIS' chameleon circuits and turned into a organ, the Sixth Doctor played out the opening notes of Toccata and Fugue in D minor. (TV: Attack of the Cybermen)

The 3W Institute played "Air on the G String" when the Twelfth Doctor and Clara Oswald were "browsing". (TV: Dark Water)

Behind the scenes
Bach was never mentioned by name on television, but his compositions can be easily identified.