He will be reunited with Wendy & Lisa
Final six shows of 21-date tour are revealed
Track will be available to mobile phone users
The purple one turns down offer of joint tour
The purple one will perform at his local Macy's
The star sets his sights on Hollywood
Tickets could cost a staggering $15,000
Demand causes internet booking site to crash
Amy Winehouse and Gnarls Barkley saluted during London show
The news comes hot on the heels of his tour announcement