"Bagong Pagsilang" (English: New Birth or Rebirth), also known as the "March of the New Society" and incorrectly referred to by its chorus "Sa Bagong Lipunan" (In the New Society), is a march commissioned during the presidency of Ferdinand Marcos for the Kilusang Bagong Lipunan or New Society Movement, a movement introduced by Marcos upon the declaration of martial law in 1972.

The lyrics were written by Levi Celerio and the music was composed by Felipe Padilla de León in 1973.

According to the composer's eldest son, Felipe Mendoza de Leon, two days after the declaration of martial law, at 2 a.m., two military trucks came to their house asking for a "hymn and a march for the New Society" as requested by First Lady Imelda Marcos to be delivered by Sunday.

[7] The march, along with its complementing hymn ("Bagong Lipunan") also composed by Felipe Padilla de Leon,[8] was featured on the 1973 proprietary vinyl album Mga Awitin At Tugtugin Ng Pilipinas Sa Bagong Lipunan performed by The Philippine Constabulary Band and The Philippine Constabulary Choral Ensemble.

Magbabago ang lahat, tungo sa pag-unlad, At ating itanghal: Bagong Lipunan!