I happen to agree completely and understand Zero Zero's point. I am like guitar hacker in that my sight-reading is poor, and quite frankly, I'd much rather learn to solo over chords than READ solos over chords. It seems to be common for many people that they take one road or the other, and don't have enough sets of "10,000" spare hours to master BOTH.

So that said - as a person that wants to solo from chord symbols, there is nothing that has been created for that to give me a little more of the information I need regarding which scales/notes will and won't work in the context of a song.

Now - it would seem to me that explicitly indicating the particular scales or notes would be the most straightforward way to do this, but that would require and ADDITIONAL nomenclature 'line' along the music for such - I can't see how that would REPLACE the chord symbols, I can only envision a supplement to them for the purpose we mention.

I'm in the process of taking many, many lessons from a really good teacher, who's teaching me EXACTLY what ZeroZero describes as missing from chord charts. That said...there are actually MANY options that can be used, and this would require additional Nomenclature specifying the particular scales/tones to include or not include.

To really analyze a tune an know what scales / arpeggios / extenstions / substitutions will and will not work - well, I guess that's what separates the level of player you are.

I would love to see some additional lines under each measure indicating which scales/chords..etc. to use and the REASONING behind each from players that have studied this.

Maybe for those interested, we could share such charts, as a way of learning and sharing together in the process of improving this aspect of the art of soloing.

And for those that think of using entirely different exotically named scales for EACH chord listed - for me at least, that is way beyond my level of processing for the purpose of an improvisation in real time - it may be an analytically structured way to do it, but there's probably few that have committed the whole, e.g. Abercrombie chart in their head and can play through a new set of changes in the real book thinking this way. I didn't say NOBODY could do it - but my guess is very few musicians can do this of the entire bunch in the world.