I'm not a fan personally, like there was a CD I bought 2 years ago that used idol groups to cover songs and it didn't work for me.
AKB48 is still going aren't they?
My latest order should be waiting in the post office, got an SMS notification yesterday. Haven't had the chance to pick it up yet, though, only noticed it after getting home late at night.
I'm guessing Yowamushi Pedal, then. Had a lot of the meganekko in the latest episode. She's not seen often enough to make the series itself interesting for you, though, unless you'll like it without her as well.