Larsson's concertino for horn and piano.
In Larsson's 12 Concertini Op. 45, each and every instrument of an ordinary orchestra is given a relatively demanding solo concerto, but of a modest length and with modest demands on the accompanying orchestra's technical proficiency. The idea was born when Larsson during the late 1940s was inspector of the National Association of Swedish Orchestral Societies (SOR). He then learned more about what amateurs need and can do. The Concertini are frequently performed both with string orchestra and with piano accompaniment.