Eight hours into the first and second and, in some places, third layers of paint on the Stravinsky painting.
Funny thing--I listened to "Apollon Musagete" once through while working, then turned the music off and talked with my sister for about four hours, with the music playing in my head. Then, about 11 PM, WQXR started playing the piece that had been running in my head for eight hours. Nice recording, with the Amsterdam Symphony. Not something that WQXR usually plays, either.