If you're looking for manga similar to Piano: The Melody of a Young Girl's Heart, you might like these titles.
Kousaka is a violinist who is looking for a new orchestra to perform with as he’s tired of his current one. He, along with others, answer an ad for a new orchestra only to find an abandoned warehouse and a crazy old man constructing the rehearsal space. And no conductor. Kousaka takes over as first violin when the old man interrupts and criticizes him. Turns out that the old man IS the conductor and musical director, and he’s put together this orchestra with lofty goals in mind, and has told them he’s going to shape them up in only a month…
Yutaka Aoi has a talent few boys have: He can sing soprano. But when Yukata’s voice begins to change as he enters puberty, the journey ahead will be one of self-discovery and reflection for not only himself, but also for those around him.
Rio Midorikawa and Usoo Ogata took violin lessons together. The sound of Rio's violin reflects her talent and has a deep effect on her audience.
Kane Yukisaka loves the world of opera, a masterpiece of art, with its colorful and enchanting staging -- and he's not afraid to do the lowest of jobs to get closer to it! Working from the fringes of the industry, he persevered until finally becoming an Artist Manager! Akihiko Tsukioka, who's been assigned exclusively to Yukisaka, is a veteran tenor who took the world by storm after his debut. His technique is perfect! But compared to the brilliance of his youth, he seems to have lost something in his sound. Yukisaka wants him to regain his number one status again, so decides to use his charms to romance him, but... dinner first? Nope, straight to the bedroom!
The Koizumi siblings have a father who is a professional violinist and a mother who is a professional pianist. Unlike her older brothers who have musical talent like their parents, Karin is a poor student at her music high school. She is proud of her twin brother Kazune, who is beginning to follow their father's footsteps into the professional violin world, but every so often, the seeming gap between them depresses her. This is a heartwarming story about the Koizumi family who love and support each other through tough times.
The youngest winner of the world's top international competition, a genius violinist with a $10 million insurance policy on his left hand. At the behest of his pianist brother, Kiyoharu cohabits with Ritsu Sagara, a treasure of the classical music world. Kiyoharu can't hide his surprise at suddenly living with someone he's been a big fan of since he heard him perform as a child. He whispers words of love to him and tries to kiss him whenever he can... Ritsu's unrestrained and excessive skinship leaves him bewildered, but when he finds out that he's been in a slump due to a broken heart...!
Lima was born in the family of musicians; her mother a worldwide opera diva and her father a famous violinist. Lima’s dream of becoming a professional violinist, like her father before his death, was shattered after the car accident. But faith brought her to the world of opera… and to eventually become a famous diva, and face up to her mother, whom has never shown her love towards her daughter…