The fourth installment of Pettah Interchange took place on the 8th of August 2015 inside the sprawling and dilapidated Rio Cinema & Hotel complex in the heart of Colombo's Slave Island district. With a lineup of over a dozen musicians from Germany, India, Pakistan, The Maldives and Sri Lanka, Pettah Interchange aims to once again deliver a high-quality slice of the Berlin underground club experience in Colombo.