Question

How to get melodious voice

Answer 1

Take a breath in and then exhale, but don't drop your chest. Sing one note and hold it as long as possible with your chest raised. Press on your chest halfway through the note (press kind of hard and raise your chest to meet the pressure). Relax the back of your neck and keep your jaw open as you're singing “ahhh.

Answer 2

practice if you have an interest ...sometimes you are good gifted

which is better and can be  your advantage