You're totally wrong guys, "aftertouch" is the
feeling you have when someone have touched
your heart.
A certain lady touced mine about 30 years ago,
and I'm still feeling the aftertouch....

OK - OK - OK... of course you're right, I
guess we're talking about music, but to tell
it like it was/is, even the "sound of music"
was/is a part of that "aftertouch"
Happy playing & aftertouching.
GJ