How to transcribe close 3-part vocal harmony?

2018-04-19 22:54:18

What are some good ways to figure out what notes are being sung? I can always tell when more than one note is being sung, but telling the difference between 2 and 3 separate pitches is very difficult for me, especially when a song is not a capella.

I actually have a specific song I am transcribing and cannot tell if I am catching all of the pitches, but this forum seems to frown upon asking for specific help like that.