Mary Ann's greatest wish is to become an opera singer and she's thrilled when she gets the chance to see child prodigy Mozart perform with his sister in Chelsea. But when her father loses his fortune, she fears her singing dreams may be shattered.Mary Ann's greatest wish is to become an opera singer and she's thrilled when she gets the chance to see child prodigy Mozart perform with his sister in Chelsea. But when her father loses his fortune, she fears her singing dreams may be shattered.