Taylor Swift - Even I know about Taylor Swift. This doesn't seem like her best work though. Kinda vapid, and a bit exploitive.
Nick Jonas - I like the background for this one, but not much else. The high pitched vocals don't do it for me, and I'm gonna say the strippers were probably not strictly necessary.
Stadiumx, Dzasko - Pretty generic partyelectro. Nothing bad but nothing good.
Cassadee Pope - Well... I really don't like the video, using 100% fan photos like that rubs me the wrong way. It feels like it's trying to cash in on some heartstrings or message of strength that isn't actually there. Like, if these were all cancer patients or something, that would be tacky but at least make some sort of statement. As it is though, there's nothing tying it together, the message is just "look, a bunch of people liked this song! (or were paid to pose!)" Makes the message of the actual song fall flat to me. That was quite a few more words than I have for the song itself, which is... just a clean pop strength/power ballad, like Grefter said. It's a fairly popular genre in MClists, so I've seen several in this space, and this isn't one of the more impressive examples to me.
Angra - Good track. Grefter covered the metal stuff pretty well already. Personally, I prefer the more bombastic stuff to this - my favorite "epic metal" tracks (or whatever you'd call this) have more rough edges to hang my mind on and make me want to repeat them. This one is if anything a little too clean and plain for me. Wings of the night, fly to the light, etc etc going through the motions for what is usually a very emotion-driven genre. That said, I guess there is a market for clean stylings as well, and the guitar here is very nice!
Public Enemy - Yeah, slam dunk. Grefter said everything I thought of while listening, including a Sesame Street comparison. The song also makes a simple, impassioned case for itself in the (clever) chorus. The other five songs here were all united in their distinct lack of making me think about anything, and an overly polished mass appeal vibe. This is the opposite, and, well, I like songs that make me think, however unsubtly.
Public Enemy >>>> Angra > Stadiumx > the others.