Singer Taylor Swift, who is known for writing songs inspired by personal experience, says she analyses every emotion a lot.
The 23-year-old is currently in relationship with singer Harry Styles and feels the best thing about emotions is that each of them is different from other.
"My songs are always inspired by emotions. I break down emotions into like 50 million categories and one big category is sadness.
"There's the missing-him kind of sadness. There's the frustrated-and-confused, don't-know-why-it-ended kind of sadness...," Swift said during a television show.
"That's why emotions are so beautiful to write about because they all sound so different to me," she added.
The singer is best known for songs like "Love Story", "Teardrops on my guitar" and "You belong with me".