That is Priceless by Steve Melcher for July 18, 2014

Just like the earlier work here, so far, this isn’t in the list of works, by this artist, in Mr. Melcher’s blog. A slightly-different-coloration, enlarged image can be found here, along with a description.A Concert is shown, with a different coloration image (click-to-humongous image found here), and described, by its current-location page (use spyglass atop slider on right for interactive enlargement).A similar-to-that coloration, enlarged image can be found here. The artist’s Wikipedia page (Google translated Italian Wikipedia page has more) and collection (more under Subcategories).