The former recommends that the doubles always have a stopping valve on both sides to ensure the playability of the low written Ab.ĭennis Brain started out on a piston single F horn with a normal valve layout. The ascending double horns were and are made also by Paxman and Alexander. The availability of the high C bugle makes some high range passages easier, but then exactly the high C bugle was not popular, because it missed out on the true horn sound. The double horn with an ascending valve only looses the low written Ab. This valve arrangement implies the loss of written low Eb, Ab, G, and F#. The ascending single horn in F makes the bugles in F and G available. A prominent solo horn player in the Boston symphony chose to play a single G horn for most of his career. Some high players chose singles in Bb, which were not always popular due to their sound. Notation settled on F horn before 1900, when single horns were still the most common. The benefit must be seen in the light of the horn starting out as an instrument changing between various crooks for different keys. The French-made horns with ascending valves came as single F horns (said to have G main tubing) and as compensating doubles in Bb/F). Never heard of an ascending valve on a French C tuba, where it wouldn’t have made much sense.
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