Searching for possible ABC MOTW

...but not certain as to production year, or if it was even an ABC production, but I'm posting this here in hopes that some of you experts can help me track this down. My recollections of it are vague, but I know I did see it a couple of times in the mid-1970's, and on network television when I was extremely little, so that's why I'm hazy on the details.

The plot that I recall involved a woman and her search for either her mother or her daughter (not sure which) who had died, and that she believed was reincarnated. The key to finding her was that the deceased was a pianist, and there was a specific piece of music associated with her.

Two particular scenes I recall were a car accident where it was raining, the windows had fogged up, and a child was screaming like crazy. I think this was the "death" scene that sets the whole chain of events off.

The second was a concert, an outdoor classical concert where this apparent "reunion" takes place between the two women; the survivor has recognized the special piece of music, and goes forward to meet the "reincarnation".

That's all I've got, I'm afraid. Obviously, the passage of time can mean I've gotten things mixed up some, but it left such a vivid impression, I know I didn't dream it all up.