PriPara, Aikatsu Stars! Recommendations
These 2 anime are both idol anime.
They have fantastic music and performances. In both anime, the characters are trying to become top idol or divine idol. The 2 anime almost always have a performance per episode. They both have machines that can change the idol's clothes.
Although there are a few differences such as Aikatsu Stars!'s setting is usually in a school while Pripara's setting is half school and half in Pripara.