By extracting, I don't mean getting a separate mp3 file or something like that.
What I meant was being able to discern the second voice behind all the other voices, instruments, etc.
It's easy to know when a second voice is there, but the pitch is hard for me to recognize especially because it feels so weaved together with the primary voice.
Do you have tips or techniques that you use for this?
Additional info : I know basic music theory, can read sheet music, and can play musical instruments, so feel free to answer with methods with these prerequisites.