She has composed music for Super Metroid, Metroid Fusion, Metroid: Zero Mission, Metroid Prime 2: Echoes, Metroid Prime 3: Corruption, Super Smash Bros. Brawl and Metroid: Samus Returns. For Samus Returns, Hamano was a sound coordinator rather than a composer, although some of her previous Metroid tracks have been remixed in the game, and she is additionally credited as an original composer. Her claim to fame was being a composer for The Legend of Zelda: Link's Awakening.