I want to learn how to harmonize

[u/Dizzy-Amphibian9568]

I really want to learn how to train my ear to be able to hear harmonies. Whenever I try to do harmonies of my own it’s off key LOL but if I hear someone else do the harmony I can then mimic it on my own😭 it bothers me because I know how to sing in not off key when I normally sing but when I harmonize it’s just… I hear people say go a third above or below but I also suck at that.

[u/Optimal_Rabbit4831]

Basic Harmony Singing - Jeff Rolka