Just as a cats brain appears to be tickled by certain types of movement, so the brains of many humans appears to be tickled by beauty - giving us a sense of pleasure that I tend to think once served some primordial purpose. Perhaps it still does.
I've also noticed that not everyone appears to share this sensation; humans divide themselves in many ways and one quite striking division is between those who think we ought to survive at any cost, however cramped and crowded, ugly and distasteful the world becomes; and those who prioritize the quality of human life and the life of all other flora and fauna. For the former, beauty appears to me to be a lesser consideration. For the latter, it is of paramount importance.
So if you have beauty in art, for me, you need no other excuse. If you 'deprioritize' beauty and dismiss it as 'sentimentality' you do need some other excuse.
NB: This show will be presented on the 12th of July by my friend Fátima Veloso, LX Dance
's director. The "Nossa Senhora do Amparo" sacred music choir to which I belong will also make an appearance. Yours truly as male tenor will also sing his heart out...