Can someone help me with this yaoi/shonen-ai manga which name I cannot remember?

Can someone help me with this yaoi/shonen-ai manga which name I cannot remember?

Is about a band and I think the leader find out that a boy can sing very good and he invited him to join but the singer boy didn't want, everyone thought it was because he was a very quied boy and maybe he was shy or something like that but it results that he used to had a boyfriend and he used to sing to him and now he couldn't because it reminds the singer boy to his ex and he also felt guilty, it results that his boyfriend comit suicide -for I don't remember the reason- and the singer boy looks all depressed too.

Please, I might not be really good at explaining this but that is what I can remember and I want to read it again because it was not just good but an excelent work T___T the art were great as well.

PS: Also, sorry for my bad english u_ù I could not find someone in spanish language that knew the manga, I am desperate(?)