I'm late in making a post for this topic. We had a family night at Valley on 2/28, and then I forgot to catch up. A site I looked at that fit our arts integration model was https://www.teachingchannel.org/videos/teaching-ela-with-music .  The teacher is working with 4th and 5th grade students in a poor neighborhood. Her ELA objective was to have the kids practice using comparisons in writing, in this case similes. She approached it by integrating visual arts on a SmartBoard and the music of Duke Ellington. The text that she opened the lesson with was a children's book about Duke and abstract visuals that matched the beat of the music they were listening to. At various times she also had them snapping their fingers or clapping, so she was engaging several parts of their brains simultaneously. The video was not specific about the arts standards being taught, but I don't think it would be too hard to make this a fully integrated lesson.
A second website I found interesting was http://www.artseveryday.org/CulturalOrg/detail.aspx?id=182 . The opening page is a general discussion of why integrating the arts is worth our time, and there was nothing too new for us there, but one the links from this page took me to http://thewalters.org/integrating-the-arts/ .This site has a fair number of well-organized subject areas like Islam, China, Mummies and Madonnas. For each of the subject areas, they have catalogued many images that would apply to the teaching of that subject by many different content areas. For instance, if I chose Islam, I could find images about literature and about visual art or music or dance. It would be up to the teacher to decide how to use the images. It also has a section with ready-made lesson plans. I found one about comparing monsters with the "outsider" in lit. using visual art in the making of monsters that I would like to use this year.