Music:
The music is the same music as the New Super Mario Bros. You would think that they would've changed the tune a little bit, but since it's still a part of the New Super Mario Bros and not like the other ones, I guess Nintendo decided to keep it as a part of the "newer" series of Super Mario Bros.
Story:
The story is the same as every other Super Mario Bros game; Princess Peach has been captured by Bowser, Mario must rescue peach, Mario goes through a platform adventure, runs, jumps and flies through the levels, collects coins, goes through pipes and jumps on koopas and goombas. It's the same old stuff that you played 30 years ago. The only thing is, is that they added "new", but very similar levels and 5,000x the amount of coins. Nothin' much different story-wise.
Gameplay:
The gameplay is similar to every other Super Mario Bros game, but with a few added features. The "somewhat" new thing about this Super Mario Bros game is to collect as many coins as you can, whilst still trying to beat the game. There are new power ups and some old power ups, such as invincibility star, tanooki suit and fire balls. When Mario collects a shit tonne of coins from a block, his head turns into a golden block making every step he takes gives him a shit tonne more coins. Among other things.
You could play the game and think you're going to be playing for months... or even years! But the truth is, a fuckin' 5 year old could play this game and beat it in a few hours! This game is way too fuckin' easy. The main fun about Super Mario Bros was the extreme difficulty. In the original Super Mario Bros for NES, you'd be lucky if you made it to the second level! Some people have been playing the original all their life and still haven't beaten it!
After finishing the first level, you get almost 5 fuckin' lives. Finishing the first world without dying, which is the easiest fuckin' thing ever gives you almost 20 lives. Provided you collect at least 5% of all coins in that world. The original, you'd be lucky if you got 3 lives... in the entire fuckin' game!
They ruined the fun by making it kiddie easy. I played the entire first world without dying! The first boss were two rhinosauruses on a spinning platform. All you had to do was hit the platform with your head and they would dye. A brain-dead retarded baby could've beaten that level.
I know I didn't cover every aspect of the game, but just talking about it is killing my brain cells.
My final rating 6.0/10