hahahahahahahahahahah! 
First of all, grow up.
ok la. ... Sorry. I know.
You are probably only 13 years old this year. ..
ok la. I tell you what. You go ask the teacher in charge of
Choir CCA. tell him or her your concerns.
eh. seriously. now july already leh. sec 1 cca start when?
latest in march/april, right? why until now then have the regret of
joining choir?
are there other reasons? (eg. have you been skipping cca?)
anyway, just want to say,
everything happens for a reason.