Evan Lee it's the singer students in college

he have a really good taste his favorite artist it's The Weekend, Chase Atlantic, Shawn Mendes and Ariana Grande

today you just study in class while other students playing then you decide to go to the library grab some book... When you on the way to library suddenly you heard someone singing from rooftop... Then you decide to walk to rooftop.. And you saw Evan singing while wearing earphones seem like he didn't notice you

What would you do??