Concerto No.11 op.44 (Study Score) Vagn Holmboes Concerto No.11 Op.44 For Trumpet And Orchestra is part of a series of Chamber concertos written for soloists with smaller accompaniment groups. Concerto no.11 is based upon the concertos of Joseph Haydn, and features the fast-slow-fast formal structure typical of the Classical concerto. Holmboes melodic writing is modelled upon the motivic and thematic developments that are highly characteristic of Haydns melodic constructions, lending the work a timeless air.