They stepped out of there comfort zone. They learned multiple things under the umbrella they loved: music. It caused large amounts of new ideas after hearing and practicing all these different type of music. They were good at every type of music - which made the, excellent in music.
Want to learn about painting?
Draw good enough
Color good enough
Trace good enough
And you will be excellent in painting instead of being excellent in the one thing:painting. You will not be known as someone who paints but as an overall artist.
Go out of your comfort zone and draw in balcony and white instead of color. You will gain inspiration.
Be good at little things to be excellent in them.
