The Adagio in Sol minore per archi e organo su due spunti tematici e su un basso numerato di Tomaso Albinoni (Mi 26), also known as Adagio in G minor for strings and organ, is a neo-Baroque composition commonly attributed to the 18th-century Venetian master Tomaso Albinoni, but actually composed by 20th-century musicologist and Albinoni biographer Remo Giazotto, purportedly based on the discovery of a manuscript fragment by Albinoni. There is a continuing scholarly debate about whether the alleged fragment was real, or a musical hoax perpetrated by Giazotto, but there is no doubt about Giazotto's authorship of the remainder of the work.