I guess there getting better with DSP electronics and speed, I've been experimenting with harmonizers in my recording software DSP's, but I guess a pedal still isn't yet a substitute for having a second player when performing.

Perhaps Ill work on Amanda myself as a challenge from style of other Boston licks learned, I know the chords, distinguishing between the lead/harmony guitar parts by ear is challenging for me. Other than the same notes in different octaves, I've been noting basic harmony concepts you mention, and I've been looking through the GT lessons but didn't yet find any specific rules or tips related to developing my own harmonies. Are there any specific lessons/tips I haven't found yet to help me understand this better?