This is a great puzzle. So many blends of colors. I thought I could start with the treble clef and that would make it easier, but alas, no. Still fun to do.
Yes a hard one and quite beautiful. Usually a mix of color doesn't throw me off. Used 164 Circle which usually comes together faster. than this one Surprised! Also always surprised when you grab a piece and insert it but wasn't looking at that piece or that connection. It happens spontaneously?