You don’t know why you liked a piece of music? Was it the harmonies? Rhythms? The way the piece was structured? The emotional content?
Sorry I honestly do not know. In other forums I used to get into trouble because I could not answer such questions.
For example, one of my desert island discs would be the Verdi
Requiem. Yet I can not stand anything else that Verdi composed. I can not explain it.
As a band junkie one of my favorite composers is Vincent Persichetti. Yet he composed one band work, the
Bagatelles, which I can not stand. Why? I do not have the foggiest idea.
When I was younger I tried to come up with criteria for determining whether or not a piece of music was great. No matter what I came up with there ended up being notable exceptions. So I gave up trying to answer such questions.