WIKIPEDIA:

“ Ayumi Miyazaki (宮崎歩 Miyazaki Ayumi) or Ayumi for short, born August 25, 1971, is a Japanese singer and composer.
Ayumi Miyazaki has sung several songs in the Digimon series. He sang the evolution theme song for Digimon Adventure called "Brave Heart" and the two evolution theme songs for Digimon Adventure 02, called "Break Up" and "Beat Hit!", respectively. In addition, he sang the second evolution theme for Digimon Frontier, called "The Last Element". Moreover, he was featured in "Yuuki o Uketsugu Kodomotachi e," which means "To the Children Who Inherit Courage", along with all of the other singers of Digimon. He also sang the theme song for Mushrambo, called "Power Play".
His father is Naoshi Miyazaki （宮崎 尚志） and his elder brother is Michi Miyazaki （宮崎 道）, who are both composers.

Digimon Singles
- Brave Heart
1. "Brave Heart" (June 25, 1999)
2. "Shinka de Guts~"
3. "Brave Heart (Original Karaoke)"
4. "Shinka de Guts" (Original Karaoke)
- Break Up! (May 10, 2000)
1. "Break Up!"
2. "Zettai All Right ~Digimental Up!~" (Armor Shinkers)
3. "Break Up! (Original Karaoke)"
4. "Zettai All Right~Digimental Up!~" (Original Karaoke)
- Beat Hit! (February 11, 2001)
1. "Beat Hit!"
2. "Forever Friends" (Hassy)
3. "Beat Hit!" (Original Karaoke)
4. "Forever Friends" (Original Karaoke)
- The Last Element (February 5, 2003)
1. "The Last [......] ”

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