This 2006 single features Ishida in a more mature, jazz-inflected R&B mode, showcasing her vocal versatility beyond her anime theme song work.
- The single was released by NBCUniversal Entertainment in 2006.
- The single was released on April 26, 2006.
- The genre is listed as jazz and R&B.
Yoko Ishida is a Japanese singer known for her contributions to anime soundtracks and a discography blending pop, jazz, and R&B influences. "Shiawase no Iro" was released during her active period in the mid-2000s, following a series of well-received theme songs for popular anime series.
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