Diana Penty, Jimmy Shergill, Ali Fazal, writer and director Mudassar Aziz, producer Krishika Lulla, Mika Singh, Neeti Mohan, Harshdeep Kaur, Shahid Mallya, Altamash Faridi and some more celebs were present at the music launch of Happy Bhag Jayegi in Mumbai. Mika Singh and Neeti Mohan performed on 'Gabru Ready To Mingle Hai', Harshdeep Kaur and Shahid Mallya performed on 'Happy Oye' and Altamash Faridi performed to 'Aashiq Tera' live at the event. Mika Singh raised some laughs with his adult humour at the Happy Bhag Jayegi music launch. Take a look!  Show less