How old is Mendelssohn?
This image appears in the gallery:
We put portraits of the great composers through Microsoft's 'How Old Do I Look?' tool. Here's what it came up with…

9. How old is Mendelssohn?
But pity poor Mendelssohn. He's the tender age of 12 in this picture and this website thinks he's a 43-year-old woman. Maybe it's the hair?