Canon 2 in the Musical Offering is the simplest kind of canon,
just like ``Row, row, row your boat.'' The score is also 8 measures long,
but Voice 2 comes in after one measure only. An
additional wrinkle provided by Bach is a third voice: the ``Royal Theme''
plays in the bass in harmony with the two canonical voices above. Here is how
Bach presented this canon in the edition he had engraved for the King: