A few words of encouragement from his music teacher changed Karl Goldstein's life
Karl Goldstein nearly gave up playing the piano, but a few words from a tough music teacher put him on a lifelong path in music.
This story is part of the My Unsung Hero series, from the Hidden Brain team, about people whose kindness left a lasting impression on someone else.
If you were one of those kids who decided to stop playing a musical instrument and your parents never got over it, you may want to
