Recognize this pattern?

Recognize this pattern?

You have two matches, and two fuses (pieces of string) which each burn for 30 seconds, and a bomb which must go off exactly 45 seconds after you light the fuse.

How do you determine exactly 45 seconds, using just these two matches and two fuses?
Note: Cutting one fuse in half won’t solve the problem because the fuses are of different thicknesses, and you can’t be sure how long any cut piece will burn.
A famous pianist once said, “If I miss practice for one day, I notice. If I miss practice for two days, my critics notice. But if I miss practice for three days, my audience notices.”

Who first said this? Ignacy Paderewski or Anton Rubinstein?