Mount Apo the mountain to be sacred ground and a place of worship. A number of genealogies of Lumad leaders in South Central Mindanao trace their roots to Mount Apo. For the Lumads, the term "Apo" was coined from the name of their great grandparent "Apo Sandawawa". At , Mount Apo is the highest mountain & volcano in the Philippines. It is one of the country's most popular climbing destinations. Several trails lead to the summit, coming from North Cotabato and Davao provinces. Arguably the easiest route to the National Park is through Kidapawan with an average hike taking 3–4 days roundtrip.
APO Hiking Society sang all of the APO Favorites and all songs from their past releases. On February 7, 2009, The Apo performed in the Open Air FTI Complex in Taguig. The free concert was sponsored in cooperation with the Taguig City hall. One month later, the Eraserheads had their Final Set Concert. On November 17, 2009, the Apo Hiking Society marked their 40th anniversary with a big concert at the SM North EDSA Skydome. It was called "APO Kayang-Kaya Pa". This was originally scheduled on September 26 but was rescheduled due to the Typhoon "Ondoy" ("Ketsana"). Last December 16, 2009, the APO