So, is that slendro or pelog tuning, there W?

From Yahoo News:

U.S. President George W. Bush, seated center, plays a traditional instrument as he sits in with a Javanese Gamelan orchestra during a tour the Asian Civilizations Museum in Singapore Thursday, Nov. 16, 2006 for a two day visit. Bush will also attend the annual Asia Pacific Economic Cooperation summit in Vietnam and visit Indonesia before returning to the United States. (AP Photo/Charles Dharapak)