Hayami is known for her singing mainly through her work performing anime and character theme songs, such as Kaede Takagaki in The Idolmaster Cinderella Girls francise. Her debut single, "Yasashii Kibou" (やさしい希望, lit. "Bright Hopes") was released on August 12, 2015. She wrote the lyrics for all the songs in the single. The title song was used as opening theme for anime television Akagami no Shirayukihime in which she also voices the main character Shirayuki. Her second single is a double A-side single "Installation/Sono Koe ga Chizu ni Naru" (その声が地図になる, lit. "The Voice Will Become A Map") was released on February 3, 2015. She also took part in writing and composing both songs. The song "Sono Koe ga Chizu ni Naru" is used as opening theme for the second season of Akagami no Shirayukihime. Her first album Live Love Laugh was released on May 25, 2016. She then released a mini album live for LIVE bundled Limited Edition Live Blu-ray/DVD and CD from her first Japanese concert tour Live Love Laugh on December 21, 2016.