I really like Girlfriend too, It's not that they didn't sing it in the 80's style, I think. I think it's that their voices aren't recorded and mixed the same way. It has a more modern crispness to the vocal track.
The english in Boyfriend is lol. But I don't think the song is that bad. I like that it's pretty poppy. I personally don't like it when pop groups try to have all this attitude, especially when they're a group of cute girls. Probably why I'm not really into this new wave of hip-hop, pop hybrid girl groups.
I never told my opinion of Etude, but it sounds like it would be a recent Kara song.

Not bad, but not that great either. But it does bring the cuteness.
My child is just ok. It's a bit different from what they've done before, but it just doesn't really convey any feeling I think, pretty boring. Sounds like a musical track, but not one of those that stick in your head.
1 year later is a nice track. But doesn't really stand out as a ballad. Would be nice in a movie or drama though.
Overall, nothing really stands out too much from this album. Like tama said, it's "nice."
