Joseph Haydn’s music contains many jokes, and the Surprise Symphony includes probably the most famous of all: a sudden very loud (fortissimo chord) at the end of the otherwise soft (piano) opening theme in the variation-form second movement. The music then returns to its original quiet dynamic, as if nothing had happened, and the ensuing variations do not repeat the joke. (In German it is commonly referred to as the Symphony “mit dem Paukenschlag”—”with the kettledrum stroke”).
In Haydn’s old age, his biographer George August Griesinger asked him whether he wrote this “surprise” to awaken the audience. Haydn replied:
No, but I was interested in surprising the public with something new, and in making a brilliant debut, so that my student Pleyel, who was at that time engaged by an orchestra in London (in 1792) and whose concerts had opened a week before mine, should not outdo me. The first Allegro of my symphony had already met with countless Bravos, but the enthusiasm reached its highest peak at the Andante with the Drum Stroke. Encore! Encore! sounded in every throat, and Pleyel himself complimented me on my idea.
The first time I saw this video during a piano lesson, both my students and I were surprised, too!
The melody is pretty basic and sometimes used to teach skips. I remember having it in one of my first books with words similar to See the Happy Little Frog, Hopping now from Log to Log.
Here’s a piano version.
Can you find the “surprise” indicated by the sforzando? Hint. It looks like this: Sforzando is one of those Italian words you get to learn in music and means a strong, sudden accent on a note or chord. Sforzando literally means subito forzando (fz), which translates to “suddenly with force.”
There’s some information about Haydn and this symphony in this video.
and this one
Beethoven’s Wig added some words
For 2 pianos, 8 hands. They’ve added their own surprise around minute 3.