MUMBAI: Radio City 91.1 FM played host to Sonakshi Sinha today as she launched new track from her latest movie 'Joker' -- 'Sing Raja'.<br /><br />Accompanied by the aliens from 'Joker' a happy and excited Sonakshi obliged everyone with dance steps and a few lines of the song 'sing raja'.<br /><br />Speaking about the fun she had during the shooting Sonakshi gushed that 'Joker' is different from anything she has done till now
