I mentioned I was planning on seeing the band Punchline live. I thought they'd be my recommendation for this Monday. They use to be on the label Fueled by Ramen, but left and started their own record label (they never really said why they left, but I think a lot of it had to do with FBR not giving a lot of attention to them). Their music is pop-punk and catchy.
Here's all the albums they've officially released. Their earlier stuff isn't as good as their later albums. I'd recommend starting with Action, Just Say Yes and/or 37 Everywhere.
How to Get Kicked Out of the Mall Self Titled Major Motion Picture Rewind EP Action 37 Everywhere Just Say Yes