Singing as an Instrument

Hmm, I'm no good player for instruments yet.
Yeah, I like music too, but I still can not play instruments well.
So, until these days, I was only singing song. I mean, I was only hearing vocal part or main melody.

Yup, I will try to listen other part. And try to sing the part as an instrument.

Mmm, but, hahaha, I still don't know much about chord. Yeah, I mean, I can't hear a chord well, yet.
And I'm not sure that if I can sing a chord, mmm, in one time?, mmm, once?