 If you liked
Fukumenkei Noise
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 ...then you might like
31☆Idream
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Idol Dreams and Anonymous Noise are both shoujo manga where the main character is a girl who has some kind of tender, fond feelings for a boy she once knew. She's forced to forget about him however, as circumstances beyond her control show up and she also ends up being somewhat involved in music, with Idol Dreams having Chikage become an aspiring idol named Akari and Anonymous Noise heavily themed around singing and even a whole music band. Both manga just generally feel like they may have the same appeal for shoujo fans.