What is beauty? Is it just a pattern?

What makes us beautiful, or thing pleasant to view, smell, or hear? I recently noticed my mother planting some flowers out on the corner of our house, red and white flowers, but what I noticed was that she placed them in a specific order, 3, red, followed by 1 white. Is it the pattern that makes it beautiful? Is it an perfectly symetrical body on a person, without any oddities, that is beautiful? How about the music we listen to? It follows a certain rythem, always keeping to the same beat, like a predictable sine or cose wave on a graph, is pattern, what makes something pleasant? In everyday life we skip through so many patterns, yet they are so obvious that we disregard them. Whats makes a beautifully trimmed and aligned row of flowers, different from that with a small imperfection, which some may consider as 'wabi-sabi'. Is there a higher level of this pleasantry? As we study math, we start from predictable linear functions to quadratic functions, all simple and follow a easy-cont.