Andamento is an Italian musical term used to refer to a fugue

Fugue

In music, a fugue is a compositional technique in two or more voices, built on a subject that is introduced at the beginning in imitation and recurs frequently in the course of the composition....

 subject of above average length.

Definition

The term was coined by G.B. Martini in the second volume of his work Esemplare, ossia Saggio fondamentale pratico di contrappunto (1775), which also featured the terms attaco and soggetto to refer to short and average-length fugue themes, respectively. In Martini's definition, a fugue theme of six 4/4 bars could be described as an andamento. The term found limited use outside of Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, but has been discussed by scholars.