The term 'kind of soprano' refers to three different types of sopranos: lyric, mezzo, and coloratura. Lyric sopranos are known for their light, airy voices and are often used in operas and operettas. Mezzo sopranos have a slightly lower range than lyric sopranos and are often used in musical theater. Coloratura sopranos have the highest range of all sopranos and are often used in classical music.