Alphorn: Vom Lock- zum Rockinstrument. Paul Haupt, Berne, 1999. Franz Schüssele, Alphorn und Hirtenhorn in Europa, book and CD with 63 sound samples available at Alphorn-Center, External links Third Annual North American Alphorn Retreat Alphorn in concert Concert and composition contest taking place annually in Oensingen, Canton Solothurn, Switzerland International Alphorn Festival at Nendaz, Canton Valais, Switzerland VSP orkestra & Arkady Shilkloper alphorn jazz & improvisations, composer / arranger : Ghislain Muller, Arkady Shilkloper, Pascal Beck National symbols of Switzerland Swiss musical instruments Natural horns and trumpets