For a series based on an arcade music game, Waccha PriMagi! holds together remarkably well. Even running 51 episodes long, there is hardly any filler, and only three recap episodes if I remember correctly. I'm going to chalk this up to Junichi Sato being series director, as these are the kinds of stories he excels at. (Which reminds me I'm due for another Kaleido Star rewatch sometime...)
Every episode except one has a musical performance in it, and even the one that didn't had a character singing one of the PriMagi songs unaccompanied in a scene. The visual design of the series is every bit as colorful and sparkly as the promo art which drew me to it in the first place, so that made me happy as well.
Waccha PriMagi! is a fun and cute magical idol series, so if you want something pretty to look at while enjoying J-Pop idol songs of various flavors in each episode, check it out.

She'll probably end up my favorite character after her inevitable change of heart. I can feel it.