Dad is playing a guitar or a fiddle, they are practicing to entertain all the people around. The son Joe is pretending to play what his dad is playing and he is singing too.
John and Joe are standing close to the building because it's cold outside, it's fall or winter.You can smell the cars, fresh air and food because they are in front of a cafe that is selling fried bacon (just because I like it), pancakes, coffee cake, angle food cake and yogurt smoothies. John and Joe are in front of the Yuforia Cafe, they are asking for a free will offering while they are playing, they need the money for singing lessons.
Mom is home making homemade soup, because it's cold outside and John and Joe are playing outside in the cold and that will warm them up.