The term "coloratura" refers to the elaborate ornamentation of a melody, which is a typical component of the music written for this voice. Within the coloratura category, there are roles written specifically for lighter voices known as lyric coloraturas and others for larger voices known as dramatic coloraturas. Categories within a certain vocal range are determined by the size, weight and color of the voice.
Lyric coloratura soprano
A very agile light voice with a high upper extension, capable of fast vocal coloratura. Lyric coloraturas have a range of approximately middle C (C4) to "high F" (F6). Such a soprano is sometimes referred to as a soprano leggero if her vocal timbre has a slightly warmer quality. The soprano leggero also typically does not go as high as other coloraturas, peaking at a "high E" (E6).Bel canto roles were typically written for this voice, and a wide variety of other composers have also written coloratura parts. Baroque music, early music and baroque opera also have many roles for this voice.
A coloratura soprano with great flexibility in high-lying velocity passages, yet with great sustaining power comparable to that of a full spinto or dramatic soprano. Dramatic coloraturas have a range of approximately "low B" (B3) to "high F" (F6). Various dramatic coloratura roles have different vocal demands for the singer – for instance, the voice that can sing Abigail (Nabucco, Verdi) is unlikely to also sing Lucia (Lucia di Lammermoor, Donizetti), but a factor in common is that the voice must be able to convey dramatic intensity as well as flexibility. Roles written specifically for this kind of voice include the more dramatic Mozart and bel canto female roles and early Verdi. This is a rare vocal fach, as thick vocal cords are needed to produce the large, dramatic notes, which usually lessens the flexibility and acrobatic abilities of the voice.
In rare instances, some coloratura sopranos are able to sing in altissimo above high F (F6). This type of singer is sometimes referred to as a soprano acuto sfogato.
Although both lyric and dramatic coloraturas can be acuto sfogato sopranos, the primary attribute of the acuto sfogato soprano is an upper extension above F6. Some pedagogues refer to these extreme high notes as the whistle register.
The soprano acuto sfogato is sometimes confused with the soprano sfogato, a singer (often mezzo-soprano) capable, by sheer industry or natural talent, of extending her upper range to encompass some of the coloratura soprano tessitura, though not the highest range above high F.