The delightfully demented diva and real-life eccentric heiress, Florence Foster Jenkins, fancied herself a coloratura soprano but was in fact incapable of producing two consecutive notes in tune. Her growing mob of followers packed her recitals, stuffing handkerchiefs in their mouths to stifle their laughter—which Mrs. Jenkins blissfully mistook for cheers. Her concerts in the 1930s and ‘40s included a legendary appearance at Carnegie Hall. Told affectionately through the eyes of her longtime accompanist, Souvenir is the sweet and inspiring, and yes, hilarious, portrait of a passionate music lover who believed that “what matters most is the music you hear in your head.”