APO Hiking Society, formerly Apolinario Mabini Hiking Society, started in 1969.

Formed in Ateneo de Manila High School, the group was then comprised of 14 members such as Lito de Joya, Sonny Santiago, Gus Cosio, Renato Garcia, Chito Kintanar, Kenny Barton, Bruce Brown, Butch Dans, Kinjo Sawada, Ric Segreto, Goff Macaraeg, Doden Besa, Jim Paredes, and Boboy Garovillo.

As they advanced into college, Danny Javier joined the group. However, after graduation, majority of the members left to pursue individual careers, with only three members left -- Jim, Boboy, and Danny.

APO, for over four decades, captured the hearts of the Filipino music lovers with the 27 albums they released and most of them are award-winning. These albums include the all-time hits like "Batang-bata Ka Pa," "When I Met You," "Ewan," "Awit Ng Barkada," "Bawat Bata," "Blue Jeans," "Pumapatak Na Naman Ang Ulan," and name it... there is a whole lot more!

The group has a notable contribution to the Philippine history not only for their many "firsts" performances around the world but because of their participation during the People Power Revolution in 1986. Jim Paredes' "Handog ng Pilipino sa Mundo" inspired by the success of the People Power. The song became the anthem of the bloodless revolution.  Did you know that he wrote it for only three minutes? It was recorded by 15 Filipino artists including the APO. It has also an English version, "A New Better and Way" that was launched in Australia. The lyrics of the song are inscribed on a wall of our Lady of Edsa Shrine, the center of the revolution.

In 2006, the album Kami nAPO Muna!: The Music Of APO Hiking Society was released to pay tribute to the group.

The album was a collection of unique renditions of the APO classics from Imago, Orange and Lemons, Parokya ni Edgar, Kamikazee, Sandwich, Sugarfree, Itchyworms, Sponge Cola, Boldstar, Sound, Drip, Rocksteddy, Top Suzara, Barbie Almalbis, Kitchie Nadal, Shamrock, and The Dawn.

Kami nAPO muna Ulit followed, with a new set of artists such as True Faith, Silent Sanctuary, Concrete Sam, Up Dharma Down, Chilitees, The Bloomfields, Scrambled Eggs, The Spaceflower Show, and Hilera.

The music of APO is absolutely timeless.