For those of you who have done choir before, you’re probably familiar with the basic vocal ranges. The bass, tenor, alto, and soprano are all important parts of a choir. However, the Blob Opera vocals include a slightly different set of ranges, which include the mezzo-soprano. This is a very common and important part of an opera quartet. The mezzo-soprano range is just under the soprano range. This means that they typically have the second-highest range in pitch when it comes to opera. A good example of someone with a mezzo-soprano range is Adele. She has notes that are slightly more deep and mysterious than that of a soprano.