In 1978, Aguilar first recorded "Bayan Ko" in a patriotic effort to, in his words, "jolt back those who were starting to forget who we really are." He also provided a rendition of the song as it is inspiring and gave him excitement and a surge of power. The song was originally composed in 1928 by Constancio de Guzman, with lyrics by poet Jose Corazon de Jesus, during a time of struggle for Philippine independence from US occupation. It emerged once again during the Marcos regime as the unofficial anthem of the emergent "people" of "People Power", the new democratic nation opposed to authoritarianism that is widely credited with the deposing of Ferdinand Marcos. In 1983, the assassination of Benigno "Ninoy" Aquino triggered massive demonstrations against the Marcos dictatorship, and Aguilar's rendition of "Bayan Ko" was blared on the radio and speakers mounted on jeepneys throughout the streets of Manila and the provinces of the Philippines. At the funeral of Senator Aquino, Freddie Aguilar sang "Bayan Ko" and felt that Aquino was a man of action who even gave his life for the freedom of the Philippines. During the performance, Freddie Aguilar did not feel scared anymore and felt strong and confident. He then decided to join the cause as well. Aguilar, along with APO Hiking Society and other Pinoy pop musicians who took a stand against dictatorship, joined other protest singers in music and street performances as part of the anti-Marcos rallies.