El Greko: I think you have it the wrong way round: the stress is "How MUCH is that doggie in the window" because the tune goes up there, not the other way round. We are so used to singing that line, we thinks that's the natural stress. But I dont think it is, I have just been trying out a simple market questions such as "How much are them cabbages then?" and I think a powerful stress on MUCH would be very unnatural.I dont there are any very strong stresses in the line, but they would be on How and Cabb if anything.
    I think you should give your attention to "Yes we have no bananas"....I think the main protagonist in this song is Greek!