Wind instrument of the family of woods, the English horn, refined in F, a fifth below the oboe, is a double reed and conical bore aerophone, constructed of two blades of reed, fixed by a long tudel, folded at an angle of sixty degrees, with a narrow conical rectilinear body (about 100 cm), currently constructed in three sections, coupled by hole and springs: body – with sixteen to twenty holes, eight covered by the fingers and the other activated by mechanism of metal keys – divided into upper junction (for the left hand) and lower junction (for the right hand) and characteristic lobe, in the form of a bulb or an ovoid cut shape.
When performing the morphological improvements and adjustments to the interpretative practice of the torch in the middle of the XVII century, which led to the creation of the hautboy, several models of grave register of the new instrument were constructed. Among these, the models in tenor typology – such as the amore oboe and the oboe size – have taken over the characteristic bell-shaped bulb, previously used in some medieval Spanish and Portuguese torch and bagpipe models and the Renaissance. In fact, the distinctive creation of the English horn is resulting from the application of the bulb-shaped pavilion to the oboe da caccia, a curved tenor oboe used between 1720 and 1760, built in a single piece of wood and refined a fifth century. below the topboy. The English horns late eighteenth and early eighteenth centuries, with two keys, were characterized by their curved or angular shape. In 1810, Triébert, in cooperation with Vogt, applied the key system and other improvements of the French oboe to the English horn. Two decades later, Brod began, several improvements in a tenor oboe rectilinear body with a bulb-shaped flag. Perfected by Lorée in the last decades of the 19th century, the morphology of Brod’s modern English horn became predominant in the construction of the English horn. The instrument is equipped with key mechanisms and other morphological innovations of the oboe.
Janet K. Page, Geoffrey Burgess, Bruce Haynes & Michael Finkelman, “Oboe” in Stanley Sadie, The New Grove Dictionary of Music and Musicians, Macmillan, 2001.