This was the first single from the duo that had won the Asayan held in Japan. Since the band won a contest similar to the American Idol show, the single was expected to be a success. Although the single debuted at #2 on the Oricon charts, it finally reached #1 after 6 weeks. For 15 weeks, it stayed in the top 10. Once it fell from the number one spot, it charted for another twenty-two weeks. "Pieces of a Dream" was the third-highest ranking single of 2001, selling over one million copies.
In 2016, the song was featured in the Anime, ReLIFE for episode 11 ending theme.
