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Sequenza I is a composition written in 1958 by Luciano Berio for the flutist Severino Gazzelloni. It was first published by Suvini-Zerboni, but the notation was revised much later and this version published by Universal Edition in 1992. It is the first in a series of fourteen Sequenze, each for a different solo instrument (or voice), the last composed in 2002.