father-in-law, Mephisto tends to gush about Ako. The loyal servants of Mephisto. Although they live to serve Mephisto, they often squabble with each other over who gets to be the leader. In episode 26, Mephisto uses the hypnosis earplugs to increase their powers, as well as make more powerful Negatones. While the Trio the Minor came from Major Land and worked for the royalty, only Falsetto willingly allied himself to Noise while Bassdrum and Baritone were placed under the being's spell to serve him. The three were eventually absorbed by Noise, with Falsetto consumed for being annoying while Bassdrum and Baritone sacrificed themselves to protect Hibiki. The bass of "Trio the Minor" who sings in a deep and booming voice. He is the eldest of the three and constantly argues about having bragging rights as leader. After his powers are upgraded, he gains a heightened sense of smell for finding notes. After Falsetto assumes leadership, Bassdrum turns into a frog-like monster, who is prone to inflating. The baritone of "Trio the Minor" who sings in a tenor and mid-ranged voice. He is the most cool-headed, but is quite narcissistic. After his powers are upgraded, he gains superhuman sight, as well as telekinesis. After Falsetto assumes leadership, Baritone turns into a fish-like monster. The tenor of "Trio the Minor" who sings in a high pitched and very off-key voice. After his powers are upgraded, he gains enhanced hearing along with a whip-like weapon. After Mephisto is freed from Noise's spell, Falsetto is revealed to be a willing follower of the Noise of Evil as he takes over Minor Land operations to complete Noise's resurrection. After he assumes leadership, he turns the other two into monsters resembling aquatic animals. The Negatones are the series' monsters of the week, created when a scattered Note is exposed to the Melody of Sorrow. The corrupted note then combines with a nearby item to form a monster that spreads the Melody of Sorrow, causing people to despair. When they are defeated by the Pretty Cures, they return to the original item while the Notes are purified by Hummy and stored inside one of the Fairy Tones. Minor characters Hibiki's father, the music teacher of Private Aria Academy and consultant of Orchestra Club. He believes "It's not music if you don't enjoy playing it", which leads Hibiki to feel spited and not get along with him well.