The Nissi Orchestra held "The Nissi Happy Concert" on an outdoor stage at the Guro Digital Valley Ace Twin Towers on Tuesday, April 29, 2008. Aimed at the evangelization of the Digital Valley and community development, everyone and anyone were invited to attend and see the performances. Featuring a brass quintet, a string ensemble, an electronic string quartet, and orchestral music, the Nissi Orchestra received thunderous response from the onlookers. First begun in May 2006, "The Nissi Happy Concert" has been providing unexpected but pleasant surprise during lunch time to those who work in and around the Twin Towers.