In 2009, in the contemporary music field, Hornroh performed two newly-commissioned pieces for alphorn quartet, including Gletsc, by Mischa Käser, which remains in the repertoire and can be performed at appropriate events.

World Premiere of Gletsc by Mischa Käser: Gletsc is the of symbolic fragment “Gletscher” (glacier). The remaining letters, h, e & r have already fallen victim to global warming. Glaciers are melting worldwide, making the earth poorer. The six movements represent landscapes formed by glacial deposits (moraines).

Moraine No. 6: Os.
Oser - ridges formed by sub-glacial meltwater. Having been sculpted left and right by the movements of the surrounding glacier, they rise as erratic embankments in the landscape and can be several dozen kilometres long.

Ablagerung Nr. 6: Os (mp3)

7th May 2009, premiere of Symphony No. 9 for alphorns and orchestra by Bernhard Jestl, with the Munich Chamber Orchestra.