In "Pomp and Circumstance", the first time Donald takes out a picture of him and Daisy, both (in the picture) are looking towards the "camera". The next time he looks at it, Daisy is looking at him instead.
In "Rhapsody in Blue" in the young man's room. The first shot shows the whole room and pans left showing him in bed with the alarm clock upright. The very next close-up shows the clock to be face down.
In "Rhapsody in Blue," after the young man starts drumming on another construction worker's head, the construction worker looks down at him angrily. As he moves away and up the steel structure drumming away, the angry construction worker is still looking down, but now there is no one there.
In "Rhapsody in Blue", the young drummer/construction worker is alternately sitting and leaning on a steel beam during a lunch break with his left foot on the beam and his right foot off, but his right foot doesn't dangle in the air, it stays in one place, as if meant to be braced against another beam.