duettino
A duettino is an unpretentious duet with a concise form.{{cite book|last1=Fuller-Maitland|first1=John Alexander|author2=Adela Harriet Sophia Bagot Wodehouse|title=A dictionary of music and musicians (A.D. 1450-1889) by eminent writers, English and foreign: With illustrations and woodcuts|year=1879|publisher=Macmillan|page=468}}{{cite book|last1=Whitney|first1=William Dwight|author2=Benjamin Eli Smith|title=The Century Dictionary and Cyclopedia: Dictionary|year=1897|publisher=Century|page=1792}} Wolfgang Amadeus Mozart offers several well-known examples of the type, including "Là ci darem la mano" from Don Giovanni, "Canzonetta sull'aria" from Le Nozze Di Figaro and "Duettino No. 3" from La clemenza di Tito, a song only twenty-four measures long.{{cite book|last=Thompson|first=Kristin|title=Storytelling in the new Hollywood: understanding classical narrative technique|year=1999|publisher=Harvard University Press|isbn=978-0-674-83975-5|page=203}}{{cite book|last1=Einstein|first1=Alfred|author2=Arthur Mendel|author3=Nathan Broder|title=Mozart|year=1945|publisher=Oxford University Press|isbn=978-0-19-500732-9|page=[https://archive.org/details/mozarthischaract00eins/page/410 410]|url-access=registration|url=https://archive.org/details/mozarthischaract00eins/page/410}} He also described "Via resti servita" in The Marriage of Figaro as a duettino.{{cite book|last1=Sadie|first1=Stanley|author2=Laura Williams Macy|title=The Grove book of operas|url=https://archive.org/details/grovebookofopera00sadi|url-access=registration|accessdate=15 January 2012|year=2006|publisher=Oxford University Press|isbn=978-0-19-530907-2|page=[https://archive.org/details/grovebookofopera00sadi/page/669 669]}}
By the time of Gioachino Rossini, a duettino was a common part of the introduction of the farsa opera genre.{{cite book|last=Osborne|first=Richard|title=Rossini: his life and works|date=27 September 2007|publisher=Oxford University Press|isbn=978-0-19-518129-6|page=[https://archive.org/details/rossinihislifewo0000osbo/page/134 134]|url=https://archive.org/details/rossinihislifewo0000osbo/page/134}} Rossini composed several pieces in the form.