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After singing Caláf, which is a pretty hard tessitura, it’s very demanding.

Unfortunately, Villazón struggled with the low-for-him tessitura; his voice, tired and frayed, often floated around the center of the pitch when he wasn’t tweaking melodies to suit his range.

The way Adès pitches the violin writing high up, almost daring the soloist to sustain it, recalls the extreme tessitura for the soprano role of Ariel in his opera “The Tempest.”

Comparison of children’s and adults’ vocal ranges and preferred tessituras in singing familiar songs.

This smaller range is called the tessitura of the part.