Hi Bill. I just tried to transcribe a song, but there were some ambiguous chords in there. I also don't know if I am notating things correctly. Can you please check?  Song (0:00-1:35) https://www.youtube.com/watch?v=vKdHdv6NGf4   Chords (4 bar lines)  (Intro)  1sus 1 1maj9 1  (Main)  1 3sus 3 6min 5min7 1aug (~ii V I in key of 4)  47 1/3 2min 4/5 b5Â°  47 5/4 3min7 6min7  2min7 27 5sus 5  (Solo section 8 bar lines)  47 3min7 47 6min9 5add6 (Scales: 4Lyd 3Phr 4Lyd 6min 3Phr)  47 3min7 6min7 b7maj7 5sus 5 (4Lyd 3Phr 6min b7Lyd 5mix)
that generally looks pretty good to me, but the first thing that is definitely wrong is the "47"s, those should be 4maj7. besides that, to just nitpick the notation and not the actual content, when you say "5add6" i'd say it should be 56. (actually when doing it all in numbers like this i prefer to write the 6 higher than the 5, but that's not always so easy in text, especially plaintext like this, so i don't blame you). another thing, when you have the 1aug, i think it's most likely 1aug7. they're not doing us a favor with the release/cutoff of these chords being so long, the chords are bleeding into each other. Makes that flat5 thing much less effective than it could be, and difficult to identify because if we try to pause and isolate that moment by brute force, it's going to have the previous chord smeared in with it. But for sure plain as day to me that feels like a thing i always use, which would be a 3aug triad over b5 bass note. (not b5dim as you called it) so in this key, Baug/C#. if you listen carefully you can very clearly hear the E note (from the C/D chord)   change to Eb during the chord. also, for more even smaller nitpicks, the 2min on the second line is 2min7. just noticed the first chord at the very top also has a 2 in it. so you might say 1sus2,4. and the 1maj9 on the first line i would definitely call that 5/1 (5 over 1). straight off the yacht