That depends entirely on the level of understanding.
Recognizing the harmony underneath a line isn't something a casual listener is going to do, but is essential for a musician who is trying to communicate with other musicians in real-time.
Recognizing the harmony underneath a line isn't something a casual listener is going to do, but is essential for a musician who is trying to communicate with other musicians in real-time.
My point is that none of that is essential to recognizing it as music and getting meaning from it.