Aliasing amamiya_rhythm -> amamiya_rizumu.
Reason: Same character, different tags being used.
Reasons for "Rizumu" over "Rhythm":
1. It's written in hiragana (天宮 りずむ) so it's a similar situation to taneshima popura (That was a pun on "poplar", this is a pun on "rhythm".)
2. Official site has an image URL with it spelled as "Rizumu": http://www.tv-tokyo.co.jp/anime/prettyrhythm/chara/images/c02rizumu.png
3. It's written "Rizumu" on the cover of her character song CD: http://www.amazon.co.jp/dp/B004YSE0JQ
4. FWIW, Wikipedia uses "Rizumu".
Updated by jxh2154