Funny how you'll find 3 or 4 of these dot skits on the very first episode back from 1969.....I had no idea they were that old.
I didn't know they were so old either, until I saw a copy of Episode 1 for myself. Here's the order of the original "30 Dots" clips:
1 and 2. The dots appear normally, with the usual music and no strange behavior.
3. The last dot fails to appear, even when the final chord plays loudly a few times. Then the dot drifts in, moving through the pattern like a late arrival to a meeting. As it takes the last place, a quiet note sounds.
4. The last dot appears in its place (final chord and all) halfway through the pattern. It then moves away as if it knew about the mistake, returning only when the other dots have appeared.
5. Halfway through the pattern, the third dot turns red--and keeps turning red whenever the other dots try to back up and correct it. The others finally force the third dot to stay yellow by appearing in rapid-fire succession; the music sounds angry and insistent this time.
6. When the third dot turns red this time, the rest decide to turn red along with it: the whole pattern backs up, reappearing in red as each note sounds slowly and deliberately.
7. After two dots appear and vanish cautiously, the rapid-fire pattern and music from #5 are repeated. When the final chord sounds, though, the third dot turns red again--inspiring the last dot to drift over and give the nonconformist a "Bronx cheer". (The red dot stays red this time, of course!)