Here is a song written in 4/4 time
Some might say it sounds sublime
It’s really quite a work of art
And it was written by our friend Mozart
This version is different from the first
It’s not the best, but not the worst
It has percussion, this is true
It’s the latest gift, from me to you
“View of a Port in the Morning”, 1774, painting by Claude-Joseph Vernet (Museum: National Museum in Warsaw):

Wolfgang Amadeus Mozart was born in 1756. That means that when he wrote this well-known sonata in 1774 he was just 18 years old. Wow!