The document discusses the key musical elements that will be referenced in exploring folk songs from the Lowlands of Luzon. It defines rhythm, dynamics, melody, harmony, texture, and timbre. For rhythm, it identifies the three components of rhythm - beat, tempo, and meter. Dynamics refer to the loudness and softness of music. Melody is the main tune of a musical piece. Harmony involves the vertical arrangement of notes. Texture describes the thickness of the sound with three types - monophonic, polyphonic, and homophonic. Timbre is the quality of sound produced.