@Roxy No. This is on the way to my office. I saw the scene day before. I painted it while returning from the office. I had the box in my backpack. The sky looked totally empty. So, I had the choice of adding either stars or the moon. I chose the moon because we seldom see stars much in the city due to too much light on the ground.
Painting fine lines cannot be done on a dried surface. Surface has to be either wet with wet paint or an oiled out one. A line should be like a line not a conglomeration of strokes. You have to have right colored paint loaded onto your brush. Use good brushes.
When painting abstract I play mostly modern music that do have lyrics or less lyrics. This helps a great deal. Silence doesn't work for me while painting abstracts, after some time I start to make mistakes; I do too much. I listen to 20th c classical music, Enigma (particularly helpful); Pink Floyd's early recordings (Meddle in particular).
During painting realism, I don't need anything particular. Most of the time its TV that is on. I can talk to my wife while I paint. Sometimes, when I paint early in the morning I play Mark's or Baumann's lecture that do not need viewing.