on 28 July 2013
Yes, it works well as a controller for Rock Band 3 on the Wii. (That game is tricky in "Pro Keys" mode because of the low screen resolution of the Wii - makes it hard to make out the different keys on the screen.)
HOWEVER - forget all that, because THIS is basically a 2-octave, full sized keys, MIDI controller keyar, that doesn't look (too much) like a toy when you've got it strapped on. It has a MIDI Out - so you're basically free to hook it up to any MIDI compatible sound source, whether you own a Wii or not. 'Proper' keytars cost HUNDREDS of pounds!
It runs on 3 AA batteries - and they're included in the box (so even more of a bargain)!
If they put this in a pro music shop for a tenner, they'd fly off the shelves. Go on, you know you want one. Let's start a keytar revolution!