Best Buy: Guitar Hero Live Guitar 2-Pack Bundle Nintendo Wii U E3
The Raphnet Wii Classic Controller to USB is the real del. It's seriously as good as a Wired Xbox 360 guitar. Legitimately buy one of these if you have a Wii Guitar.
NEW Nintendo Wii Wii-U Guitar Hero 5 BAND SET Kit w/Drums+Mic+Guitar Game Bundle 5030917072253 | eBay
Guitar Hero Wireless Controller with Adjustable Strap for Wii Guitar Hero Rock Band 3 2 Remote Gamepad Joystick Console|Replacement Parts & Accessories| - AliExpress