The correct answer is the following.
What makes a song "culturally", "historical" or "aesthetical," is a series of elements.
A song is cultural when it reflects in the lyrics or in the music, one or different aspects or traditions of a determined culture or place. It could be a beautiful piece of music that is romantic and portrays the way you approached your loved one with a special style. A song can be historical when it reflects a moment in time or passage in the history of a generation, A song can be aesthetically when the sounds of the composition are brilliant and shows the technical knowledge of a maestro that wrote the piece of music, the complexity of the notes, the richness in the melody and the mastery in the execution.
