Thanks for pointing that out -- that's such a cleaner way of presenting the argument I was trying to make. Doh. Yes, when I was learning standards, I learned t

Thanks for pointing that out -- that's such a cleaner way of presenting the argument I was trying to make. Doh. Yes, when I was learning standards, I learned them by harmonic analysis, not by literally learning them in all 12 keys. If you know that it's ii-V-I, any reasonably good musician should be able to do that in all 12 keys off the bat. Thus, you simultaneously know the tune better, and the problem of transposing disappears. Well said!