Watch The High Note Full Movie Free Online 123Movies. Set in the dazzling world of the LA music scene comes the story of Grace Davis, a superstar whose talent, and ego, have reached unbelievable heights. Maggie is Grace’s overworked personal assistant who’s stuck running errands, but still aspires to her childhood dream of becoming a music producer. When Grace’s manager presents her with a choice that could alter the course of her career, Maggie and Grace come up with a plan that could change their lives forever.