This video explains the difference between vocal tone and vocal classification, and how to determine one's vocal classification using an online test created by the speaker. It clarifies that vocal tone is song-specific, while vocal classification refers to the range of notes a voice can produce. The video outlines the common classifications for female (soprano, mezzo-soprano, contralto) and male (tenor, baritone, bass) voices in popular singing and explains the purpose of classification. It also details how to use the online test, interpret its results, and what to do if the test doesn't yield accurate results, emphasizing that falsetto is included in the range.