This 2006 single "I Believe" marked Ayaka's second release, following her debut the previous year. The song features a blend of pop and jazz influences, showcasing her vocal range and dynamic style.
- The single was released on AFTERGLOW RECORDS. It reached number 2 on the Oricon charts. The B-side to the single was "Why What Who".
- Ayaka was nominated for Best New Artist at the 2006 MTV Video Music Awards Japan for her work in 2005.
- The song was later included on her 2006 debut album, First Sound, which reached number 2 on the Oricon charts.
Ayaka is a pop and jazz singer from Osaka, Japan. She is best known for her powerful vocals and emotive delivery.
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