 He also encouraged and recognized the musical talent of noted violinist Ernesto Vallejo, whom Adonay gifted his first violin.During the Philippine Revolution, Adonay's work ""Te Deum"", which is meant to be played in a mass of thanksgiving for victory in battle, was first performed on July 7, 1897.A letter written to Emilio Jacinto by a musician named Guillermo Lisboa y Bagayan in Longos on January 15, 1899 mentioned Marcelo Adonay's arrangement of ""Marcha Real Filipina"" with instruction that it will be played when the "Katipunan" enters Manila.