When mixing the vocals, you need to pay attention to the fit between the lead singer and the accompaniment, including the fit of volume, timbre, and sound field. It cannot be like two layers of skin.

Track mixing is more about paying attention to the balance of each part, including the balance of volume, frequency response, and sound and image.

Original music is mostly divided into separate tracks. Because it is original, all the parts are newly performed. It is natural to use separate tracks for mixing.