Uta no☆Prince-sama♪: Maji Love 1000%, IDOLiSH7 Recommendations
Both are idol anime with a similar feel if you liked one you might like the other, however Idolidh7 has better characters and the protagonist isn't brain dead like the one in Uta no pri. But both are similar with the music and idol aspect
Both seem very similar at the surface, with 7-8 color-coded idol boys working their way to the top, with both main groups having a well respected rival in the industry with bandmates who don't (at least at first) get along
If you liked utapri, you will like idolish7. It has similar characters but gives them a lot more depth and has more engaging plotlines.
If you liked idolish7, you may like utapri, especially if the main draw for you is bishounen idols and good music
Both are great idol anime with similar story and some similar characters.... And both have great music