In addition to behind-the-scenes contributions from Mazzoli, Karpman and Noone, the theme of underrepresented, and unjustly forgotten and overlooked women composers and conductors in the world of classical music became central in the show's third and fourth seasons. Historical female composers who appear in the show include Vítězslava Kaprálová, Isabella Leonarda, Nannerl Mozart and Fanny Mendelssohn. The fourth season featured Pulitzer Prize-winning contemporary composer Caroline Shaw appearing as herself (and the characters perform one of her actual compositions). Composer Paola Prestini also makes a brief cameo in season four, playing one of her own compositions.
