Cannot Cross-Play Guitar Hero Wii With Band Hero Xbox 360

Impossible. Different consoles, different games, no cross-platform play in 2009–2010.

Why

• Wii and Xbox 360 use incompatible online services (Nintendo WFC vs. Xbox Live)
• Guitar Hero Warriors of Rock (Wii) and Band Hero (360) are separate codebases
• Instrument dongles are console-specific (Wii dongle ≠ 360 dongle)

To Play Each

• GH Warriors of Rock: Wii console + Wii guitar/drums/mic
• Band Hero: Xbox 360 + 360 instruments

No bridge exists. Play on native hardware.