What common characteristic distinguishes classical singing from popular singing?

The distinction of classical singing primarily lies in its characteristic use of wide vibrato and pure vowel tones. Classical singing techniques emphasize the production of a rich, resonant tone achieved through consistent breath support and a fully opened throat, which allows for sustained pitches while maintaining clarity and richness of sound. The use of wide vibrato enhances the expressiveness and warmth of the voice, contributing to the emotional depth typical of classical music.

In contrast, popular singing often prioritizes different stylistic techniques, which can include a narrower vibrato or even the use of vocal fry and other effects that may not emphasize pure vowel production to the same degree. This difference showcases the varied purposes and emotional expressions found in these genres, with classical music often focusing on the purity of tone and technical aspects of singing.