I Got Rexitchi On An ODD Generation?!

[Hanikamitchi]

Hello, it's Hanikamitchi. I have two music stars, and one of them had a Mametchi, but then it evolved. It evolved into a Rexitchi! The only weird thing was that Rexitchi was on an ODD generation and not an even one! Is there something wrong with my Tamagotchi? Please help!