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Today, recorder sizes are named after the different vocal ranges. This is not, however, a reflection of sounding pitch, and serves primarily to denote the pitch relationships between the different instruments. Groups of recorders played together are referred to as "consorts". Recorders are also often referred to by their lowest sounding note: "recorder in F" refers to a recorder with lowest note F, in any octave.
The table in this section shows the standard names of modern recorders in F and C and their respective ranges. Music composed after the modern revival of the recorder most frequently uses soprano, alto, tenor, and bass recorders, although sopranino and great bass are also fairly common. Consorts of recorders are often referred to using the terminology of organ registers: 8′ (8 foot) pitch referring to a consort sounding as written, 4′ pitch a consort sounding an octave above written, and 16′ a consort sounding an octave below written. The combination of these consorts is also possible.
As a rule of thumb, the tessitura of a baroque recorder lies approximately one octave above the tessitura of the human voice type after which it is named. For example, the tessitura of a soprano voice is roughly C4–C6, while the tessitura of a soprano recorder is C5–C7.
Modern variations include standard British terminology, due to Arnold Dolmetsch, which refers to the recorder in C5 (soprano) as the descant and the recorder in F4 (alto) as the treble. As conventions and instruments vary, especially for larger and more uncommon instruments, it is often practical to state the recorder's lowest note along with its name to avoid confusion.