Best Nikon 1 lens for concerts?

I have a nikon s1 that i absolutely love but I'm not in love with the lens that came with it (1 NIKKOR 11-27.5mm f/3.5-5.6) it's okay sometimes but I purchased the camera for use at concerts and even when I'm front row it doesn't zoom in far enough, what is the best lens for zooming in really far?

There's the Nikon 1 Nikkor VR 30-110mm f/3.8-5.6
http://www.bhphotovideo.com/..._Lens.html
It is compact enough that you might get away with it. That would give you a 135 equivalent of 297mm. However, while the Nikon1 can give you higher useful ISO than a point and shoot, f5.6 is slowing things down.
There's a new Nikon 1 NIKKOR VR 70-300mm f/4.5-5.6 coming out soon.
http://www.bhphotovideo.com/...0_300.html
However the f5.6 is still slowing you down, and its size may attract attention.
The Nikon FT1 Mount Adapter plus Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II would be theoretically capable of giving you the best results, but you would be ejected from the concert hall before you get to use it unless you can convince the event management to issue you a photography pass.
Realistically, if you discard the fantasy of capturing close-ups of the performers, you could probably get some decent pictures of the overall scene with the Nikon 1 Nikkor 18.5mm f/1.8
http://www.bhphotovideo.com/...f_1_8.html

There are none.

Concert photography is difficult enough with the right kit and a press-pass - shooting with an EVIL camera with a notoriously small sensor from the audience (if you're allowed to take it in - many venues don't allow, 'Professional,' (big, black or with interchangeable lenses) cameras in the first place) is practically impossible.