Aside from his songwriter credits in his solo album and in Rivermaya, Blanco also arranged and wrote music for various cause oriented projects such as the United Nations Millennium Development Goals theme ""Tayo Tayo Rin"", The Philippine Department of Tourism theme ""Biyahe Tayo"", both of which were performed by veteran Filipino musicians, such as Freddie Aguilar, the APO Hiking Society, Lea Salonga, and Sharon Cuneta. He also co-wrote ""Posible"", which has been used as a theme song for the 2005 Southeast Asian Games.