Musa (voiced by Lisa Ortiz) is the Fairy of Music. Musa gets her strength and energy from all kinds of music. She also loves all forms of music and can play any type as well. Although she tries to put up a tough front to isolate herself and is often pessimistic, she is a loyal and caring friend. She is the most down to earth out of the Winx and is never afraid to speak her mind. She is a bit of a tomboy but can be girly at many times. She is pale and appears to have Asian features, with blue hair and blue-violet eyes. She comes from the planet Melody, so she grew up with music all around her. Melody is also a place where its people love all kinds of music. Her mother, Matlin, was a great singer and her father, Ho-Boe, is a great pianist and could also play the cello. She is best friends with Tecna.
Unfortunately, Matlin became really ill and died when Musa was very young. Her pixie is Tune, the pixie of manners, who often gets on Musa's nerves since they are almost the exact opposite of each other in terms of personalities. Her magical pet is Pepe, a brown bear. Her bonded ocean keeper is Sonna, the gatekeeper of Melody. She is Riven's girlfriend. Musa and Riven had some difficulties because Riven got jealous and thought Musa was moving on to a more famous life with her music career and would forget about him; Riven then failed to show his support for Musa's dreams. In doing this, he broke her heart and she broke up with him supposedly forever (which she says in Season 4 episode 10), but soon realized they couldn't be apart from each other. Riven then tries to convince her that they love each other a lot, which shows Musa that he's changed. Musa then forgives Riven, and they reconciled. Her birthday is on May 30. She loves playing instruments and singing. She loves goldfish, and her favorite color is yellow. Her best friends are Aisha, Tecna, and Flora. Her hair has really changed; in the first season, she has very short pigtails. In the second season, her hair isn't changed, but in the third season and the first movie, she has 2 long pigtails. In the fourth season and the second movie, her hair is straight and not in pigtails. In the fifth season, Musa has a ponytail. It is unknown if Musa has changed, because in the first season she was shown to be tomboyish, but in the last season she is wearing skirts and has become softer, unlike her old tomboyish self.
- Jaden may met Musa one day.
- Jeffrey may meet Musa one day.