▼ Of the three horn concertos attributed to Franz Joseph Haydn only one, the concerto Hob. VIId: 3, can be proven as an authentic composition. The concertos published as Hob. VIId: 2 and Hob. VIId: 4 are thought by musicologists to be spurious attributions. Current scholarship suggests that the concerto Hob. VIId: 2 would be better attributed to Antonio Rosetti, and that the concerto Hob. VIId: 4 may be a work of Michael Haydn. This document considers these possible misattributions and compares the concertos to known works of Joseph Haydn, Michael Haydn, and Antonio Rosetti. A survey of the historical background of these composers and their individual compositional styles is examined and compared with the circumstances of the concertos in question in order to understand the causes of, and correct, the misattributions. Advisors/Committee Members: Gardner, Randy.