Scoring her first hit at age 20 with the dance-friendly paean to body positivity "All About That Bass," American singer/songwriter Meghan Trainor topped the charts with a retro-pop sound that won her a Grammy Award for Best New Artist in 2016. Up until that point, she had already devoted most of her life to music. Born in December 1993, Trainor was raised on Nantucket Island in Massachusetts, where she began making music when she was seven and wrote her first song at the age of 11. She attended Nauset High School on Cape Cod; there she sang and played trumpet in the jazz band,...