Tìm một nhạc cụ tương tự như piano. Tìm được nốt thấp nhất mà bạn có thể hát bằng giọng bình thường (modal). Hát nốt thấp nhất bạn có thể xuống, kể cả các nốt mà giọng bạn nghe như hơi thở. Ghi lại nốt thấp nhất của bạn.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
The easiest way to identify your range is with the assistance of a tuned instrument that you can play while you sing, like a piano or keyboard. If you do not have access to the physical instrument, download a piano app, such as Virtual Piano, on your smartphone, tablet, or other device as a substitute. Using an online piano on your laptop or device will give you access to a full simulated keyboard. It will also make it much easier to figure out which notes are your highest and lowest because the