I'm not a fan of ballads but this album, my god, it's awesome.
I dunno if anyone cares but I wrote a short review
Let's Step Up: AWESOME INTRO, AWESOME SONG. The tap dance is amazing
I really hope they will perform the tap dancing live.
Shampoo: Not what I was expecting. For some reason, this song has to grow onto me a little more before I can say that this song is awesome. I think it's because it's different from other title songs, it's a more relaxing song
But I like it and the lyrics are awesome.
Virgin: Awesome song. Although I was hoping for a fierce rap part. Oh well
Bang! (2011 New Recordings): The new recordings sound nice. Their voices are clearer as well
The music is slightly different too. I love this song. (Then again, Bang! is probably my favorite AS song)
Play Ur Love: I love this ballad. It's beautiful.
Dream (feat. Yoon Jo): This is such a nice song. *dances*
Because of You (2011 New Recordings): 
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Leaning Against Time (Raina Solo): I really love Raina's voice, she has a beautiful voice. This song is so sweet and nice, I like it.
Are you doing okay: omg, their voices are so beautiful in this song. I love it.
Funky Man (Nana & Lizzy) (feat. Kyung Min): WOOOOO~~~~ YEAH~~~~ This song is funky~ Absolutely awesome song. I'm not really good in telling voices apart so I was wondering who is singing at 1:40 because that part sounds awesome.
My Bell (Jung Ah solo): Of course, it's a ballad. xD Just like Raina's voice, I really like Jung Ah's voice in this song. Nice song. Not my favorite, but it's nice.
When I Fall (2011 New Recordings): This song is a gift from heaven. The new music sounds awesome. The drums are so nice omg.... I love it.
Score: 5/5
And because it's After School, I'll forgive them for the many ballads on this album
Oh and I was hoping for more rap parts.