Johann Sebastian Bach
loved to put unexpected themes
and obscure references
in his music. Most famous of these is the fact that he often put his name in his music (in the main theme
or elswhere.) Although in English there is no such note as 'H', in German, H is B
(And "B" is the German for the English B flat
), so Bach often used the notes 'Bb A C B' in his music, perhaps as a sort of private humour
In the last page of Bach's 'Art of Fugue
, Bach brought in his name as a countersubject
. At that point, he died.
See also Godel, Escher, Bach by Douglas Hofstadter.