Moonlight Sonata

The Moonlight Sonata was a celebrated musical piece written by Ludwig van Beethoven.

The Sixth Doctor attempted to play it on the piano before stumbling and giving up, regretting turning down Elton John's lessons. (AUDIO: Project: Lazarus)

The Cyberman Bremm, known to the public as the Silver Turk, played it on the piano at the 1873 Vienna Exposition. His 5 o'clock performance on the 11 September was interrupted by the Doctor during adagio sostenuto. (AUDIO: The Silver Turk)

The composition played in the 21st century on John Ellis' 1950s radio; John smiled at the tune. (TV: Out of Time)

The music retained its popularity into the 2002nd century. Gorky Sax once listened to the Moonlight Sonata aboard Trear Station to calm himself down after a stressful encounter with his boss Vortia Trear. (AUDIO: The Year After I Died)

Behind the scenes
None of the stories identify the name of the piece, but the famous adagio sostenuto, the first movement of the sonata, is clearly recognisable in each.