but that it has to trigger emotions, memories and reactions in the listener which will enrich the experience

This! I consider a song good if I felt emotions in it and even bring back some memories. Like even with just the melodies, it has the power to make me tear up and feel sad. It's really cool when a music can do that much, that's when I appreciate more the composer, the producer and the people who arrange it as well as the performer. It's really just like a work of art. And although I rarely feel it in Art, but I appreciate them. Maybe because I don't know much about art that's why I rarely experience an emotions when it comes to arts.

Anyways these artworks are seriously so pretty. It's just anazing how can an an artist make it more detailed like the real thing. What I often feel whenever I see beautiful art was envy. Coz I wish I am skilled and talented just like these amazing artist out there.