The Kenny Everett Show Jingle

To-day I watched two videos about Elgar's Enigma Variations in which it's pointed out that Elgar wrote a variation on the Adagio cantabile of Beethoven's Piano Sonata No. 8 in C minor, Op. 13 (Pathétique Sonata).  It's at about 4:50 in this video:

Here's the notation of the first few bars (found here):

This sounded familiar to me, and it didn't take too long to place it as the jingle from the Kenny Everett show.  I referenced that recording and found that it's in a higher key.  Beethoven's piece (this section, anyway) is in Ab major, but the jingle is in C# major.

The Zombie Heaven liner notes say that the jingle demonstrates "Rod's choirboy background."  There's no information in the liner notes about who wrote the jingle, but its being an adaptation of Beethoven is also relevant to Argent's musical background.