K-On!, SoniAni: Super Sonico The Animation Recommendations
Both are musical moe shows about cute girls,however Sonico has a little more ecchi.Nonetheless both shows are adorable and have their funny and heartwarming moments.
Both are about cute, girl bands and them living there lives.
Super Sonico has lots of fanservice, while K-On! has none.
Both involves Music, Slice of Life and Moe
Sonico has more oppai
Band Related (Music)
But SoniAni has fanservice.
Both are light-hearted comedies about group of girls who are in a band. While K-On goes the moe way, Super Sonico goes the softcore ecchi way.