The Apolinario Mabini Hiking Society, later popularly known as APO Hiking Society, or simply APO, are a Filipino musical group, that comprised Danny Javier, Jim Paredes, and Boboy Garrovillo. Today, the group consists of only Paredes and Garrovillo as a duo. APO Hiking Society are regarded as one of the pillars and icons of Original Pilipino Music. The group was formed and had its fledgling beginnings in 1969 at the Ateneo de Manila High School, with 12 members: Lito de Joya, Sonny Santiago, Gus Cosio, Renato Garcia, Chito Kintanar, Kenny Borton, Bruce Brown, Butch Dans, Doden Besa, Ric Segreto Macaraeg, Jim Paredes, Boboy Garrovillo, and the 13th member, Danny Javier, who joined in college. The group's name was created from the acronym AMHS representing their school with a witty twist having an irreverent reference to the Philippine revolutionary intellectual and hero, Apolinario Mabini, and later shortened to "Apo", an Ilocano term for a wise man or a Tagalog term for grandchildren, and later re-branded to "APO". Contrary to popular belief, the "Apo" name was not a reference to the Philippines's highest peak, the potentially-active stratovolcano Mount Apo.