*slaps nachdenki around a bit with a troutI just took caps from the Ongaku Gatas DVD magazine. So, a bump of cuteness:

About those close-up screencaps, she had other expressions too, but I liked this one the best, and couldn't choose which one of the two caps to use, so I used both

So that's why it looks a bit like "eh? it's almost the same face?" ROFL
I really liked her in Ongaku Gatas concert. She's still awkward at times on stage, but I think she's improved from the previous perfs that I've seen her in. Most importantly she seems really genuine up there

Can't comment on the vocals because I dunno how much or little was live. But I do like her tone of voice (clear and cute)
