... best known for his portraits, nudes, and paintings of genteel urban interiors, often set in his own light-filled Manhattan apartment. Almost all of his work is quiet and cool, full of suppressed story and emotion. The eroticism of the nudes seems more of longing than of carnal celebration. And to my mind, anyway, there's a veiled but persistent sadness running through his work." (http://godsandfoolishgrandeur.blogspot.nl/search?updated-max=2014-10-24T07:00:00-07:00&max-results=10&start=26&by-date=false) In his elegant apartment overlooking Central Park, Koch rendered in precise and painterly detail his world of artists' models and music students, cocktail parties and conversations, tabletop still lifes and window vistas. ...he composed his persona as carefully as he arranged the objects in the still lifes and interiors he painted.... [http://www.tfaoi.com/aa/2aa/2aa615.htm]