Without being able to listen to the recording directly, I can suggest some points to help you determine the texture of "Martinillo."
-
Unison: This texture occurs when multiple voices or instruments sing or play the same melody at the same pitch or rhythm. If everyone in the recording is singing or playing the same notes together, it would be unison.
-
Harmony: This texture occurs when different parts sing or play different notes simultaneously, creating chords or a richer sound. If the recording features multiple melodies or supports a main melody with additional harmonies, it would be classified as harmony.
Listen closely to the parts and how they interact with each other to decide. If they are all together on the same melody, choose unison. If there are different notes contributing to a fuller sound, choose harmony.