Hernández formed a commission to revise the lyrics. On May 26, 1956, the Tagalog translation "Lupang Hinirang" was sung for the first time. Minor revisions were made in the 1960s, and it is this version by Felipe Padilla de León which is presently used. The Martial Law years from 1972 to 1981 during the second term of Ferdinand Marcos up to the 1986 EDSA Revolution saw the use of the National Anthem as the opening protest song of some political parties, activist organizations, and union groups, accompanied by the use of the "raised clenched fist" salute instead of the traditional hand-to-heart salute. This was notably done by opposition political parties and activists. The 1956 Filipino lyrics were confirmed in 1958 by Republic Act No. 8491 (the "Flag and Heraldic Code of the Philippines") in 1998, abandoning use of both the Spanish and English versions. Philippine law requires that the anthem always be rendered in accordance with Felipe's original musical arrangement and composition, but the original holograph cannot be located. Historian Ambeth Ocampo observed in 2006 that the Spanish lyrics, which were not intended to be sung when composed, do not flow with the music very well compared to later English and Tagalog versions which are smoother. Also, some of the original meanings in "Filipinas" have been lost in translation; for example, "hija del sol de oriente" () in the original Spanish version became "child of the sun returning" in the Philippine Hymn and "perlas ng silanganan" () in the present (official) version. In 2011, Senator Bong Revilla introduced a bill which, among other things, would have removed the requirement that the anthem be sung "in its original Filipino lyrics and march tempo", but this was not promulgated into law. Other anthems "Lupang Hinirang" was not the first Philippine national anthem to ever be conceived. The composer and revolutionist Julio Nakpil composed "Marangal na Dalit ng Katagalugan" (Honourable Hymn of the Tagalog Nation/People) upon the request of Andrés Bonifacio, the leader of the Katipunan, the secret society that had spearheaded the Revolution. Bonifacio had converted the organization into a revolutionary government—with himself as President—known as the Tagalog Republic just before hostilities erupted. The term "Katagalugan" in Bonifacio's usage referred to the Philippine Islands and its population as a whole; not just ethnic Tagalogs, but all Filipinos. Nakpil composed his national anthem for Bonifacio in Balara (part of modern Quezon City) in