So did YT take away the "chapters" or "moments" from nonpremium channels? Oh well, here go the timestamps anyway:

00:00 Headers
00:08 Perfect v1
00:21 Perfect v2
00:36 Late
01:04 Early
01:27 Persistently Red Dot
02:34 All Red
03:35 Red Dot Prevails
04:12 Header
04:14 Checkers (1970 extra)
04:29 Header
04:31 Crumpled
04:46 Cough
05:47 Little Dot 1
07:05 Little Dot 2
07:27 Square 1
08:21 Square 2
08:51 Square 3
09:57 Square Domination
10:11 Dots & Squares Cooperate

From Seasons 1 (19691970) & 3 (19711972). Produced by Clark Gesner, with music by Joe Raposo. Though I don't completely agree with all the information as given on the Dot Bridge Muppet Wiki page, here's its link:
https://www.muppet.fandom.com/wiki/Do...
After doing some audio analysis, my determination is that there are indeed two nearly identical but different versions of the initial "perfect" bridge featured all throughout Season 1, and in a given episode where both are used, it wasn't just a repeated showing of the first version Also, I took a little liberty with the soundtrack of the last segment, where the dots & squares cooperate; just my trial at stereo reprocessing, since there's a lot going on in that clip.
This upload is dedicated to MsPandaRosa, where ever she may be.
#MsPandaRosa #ClassicSesameStreet #DotBridge