Popular American singer Akon sang "Aaj ki party" hitmaker Mika's upcoming song "Ali Ali" with him on stage here.The "Lonely" hitmaker was here for a private event, which was also attended by Mika and actor Ram Charan. "Had a wonderful time in Pune at Bala's birthday along with my bro Akon and Ram Charan. Happy birthday Bala bhai. God bless you! May you live a long life. Love you and special thanks to Akon for singing my upcoming song 'Ali Ali' with me on stage," Mika tweeted on Saturday. He also posted a few photos featuring them on the stage. Meanwhile, ace designer Neeta Lulla had created a jacket for Akon, who had sung "Chammak challo" for the Shah Rukh Khan-starrer "Ra.One".