Maeyamada Kenichi (前山田健一), known best by his stage name Hyadain (ヒャダイン), is a singer, song writer, composer, arranger and a music producer. He debuted as a soloist in 2011 with "Hyadain no Kakakata ☆ Kataomoi-C", the opening theme for the TV anime Nichijou.
Since becoming a music producer in 2007, he has written songs for several artists and idol groups, including idols managed by UP-FRONT GROUP. Hyadain has produced songs for MilkyWay, Melon Kinenbi, Tsukishima Kirari starring Kusumi Koharu, YuiKaori, Juice=Juice, and Kobushi Factory.
- Real Name: Maeyamada Kenichi (前山田健一)
- Stage Name: Hyadain (ヒャダイン)
- Birthdate: July 4, 1980
- Birthplace: Osaka Prefecture, Japan
- Blood Type: A
- [2011.04.27] Hyadain no Kakakata ☆ Kataomoi-C (ヒャダインのカカカタ☆カタオモイ-C)
- [2011.08.03] Hyadain no Joujou Yuujou (ヒャダインのじょーじょーゆーじょー)
- [2011.11.23] Christmas? Nani Sore? Oishii no? (クリスマス？なにそれ？美味しいの？)
- [2012.05.09] Start it right away
- [2012.08.08] Sanba de Toriko!!! (サンバ de トリコ!!!)
- [2013.01.30] 23ji 40fun (23時40分)
- [2013.05.29] Warai no Kamisama ga Orite Kita! (笑いの神様が降りてきた!)
- GIVE ME UP (arrangement)
- Hapi☆Hapi Sunday! (Tsukishima Kirari starring Kusumi Koharu (Morning Musume)) (lyrics, composition, arrangement)
- Hate Hatena (Hanasaki Cobeni starring Kikkawa Yuu) (lyrics, composition, arrangement)
- Makenki! Tsuyoki! Genki! Maemuki! (Yukino Noel starring Kitahara Sayaka) (lyrics, composition, arrangement)
- Tan Tan Taan! (MilkyWay) (lyrics, composition, arrangement)
- HEARTBEAT ga Tomaranai! (lyrics)
- Shooting☆Smile (lyrics)
- PUPPY LOVE!! (lyrics, composition, arrangement)
- Kyu! Kyu! CURIOSITY! (Ogura Yui solo) (lyrics, composition, arrangement)
- Ueika!! (lyrics, composition, arrangement)
- KEEP ON Joshou Shikou!! (lyrics, composition)
- Chotto Guchoku ni! Chototsumoushin (lyrics, composition)
- He is a fan of idol groups, though he personally likes Morning Musume and other Hello! Project groups.
- He does the female voices in his music videos.