If you're looking for manga similar to So Clear, you might like these titles.
VANCA is a band created by vocal Takuya and unusually tall guitarist Ooshikouchi. Anyone who comes near the band becomes involved in their affairs! VANCA knows no limits, and continues to grow, taking the world by storm.
The stage is set when Ichirou Gomen, a newbie producer of the record company Gaia loses yet another production opportunity to inexperience. Wanting to pass on his childhood dreams of stardom to a fledgling singer, he toils learning the process day by day through failure. However, his life is sent into a loop when he follows a beautiful performing voice, the voice of Jam Hiiragi, playing live to a group of homeless people at a streetside. Wrangling the prodigy talent and her bratty complications, together they face off and challenge the professional world of the music industry.
Oto Amaike is not a prodigy. In fact, he isn't even sure why he studies piano. But when sharing a keyboard with Shirabe Nadachi, his purpse is clear: He is a secundo who plays the same piano as his primo. For reasons he has never understood, Shirabe abandoned their duet when they were children. Now Oto has met a young girl and is considering playing duet again. Which, of course, is the perfect time for Shirabe to reenter his life...