Well...! Selena is actress and singer too, but her best friend Demi Lovato is real singer. and now Selena wants to become singer, but we do not know will Selena become singer!!! (i think that Selena will be singer and actres too).
To become a singer you have to 1. be able to sing 2. Get an agent and 3. start your career after you have completed those 3 easy steps put a song on YouTube and then a famous singer will find you, hopefully like you and you have become A FAMOUS SINGER.