The Mona Lisa has no eyebrows — it was fashionable to shave them in 15th-century Florence.

The Blues music genre gave birth to jazz, rock and roll, R&B, and much of modern popular music.

K-pop groups are often assembled by entertainment companies using rigorous auditions — trainees can spend years preparing.

The world's longest musical piece, 'As Slow As Possible,' is being performed in a German church and will last 639 years.

Gymnast Simone Biles has performed skills in competition so advanced they were named after her.

Synchronized skating — where teams of up to 20 skaters perform together — is a competitive discipline not yet in the Olympics.

Chocolate was consumed as a bitter beverage by the Aztecs long before it was made into solid bars.

Mozart composed his first symphony at age 8 and had written over 600 works by the time he died at 35.

The fastest Olympic swim races are completed in under 25 seconds.