Miley Cyrus sings through her nose because that’s how she naturally produces sound. Some people naturally produce a sound with a nasal quality to their voice, and this is called nasality.
Nasality is the result of sound produced in the nasal cavity and resonating through the nasal passages, which can give the voice a distinctive quality. It is not uncommon for singers to use their nasal cavity to produce sound and add character to their voice.
Some people are more prone to singing with a nasal quality due to the shape and size of their nasal passages. There’s no particular reason why Miley Cyrus sings through her nose, but it’s probably a natural part of her vocal production.
