Largest alphorn ensemble
Who
Christoph Andereggen
What
366 people
Where
Switzerland (Zermatt/Gornergrat)
When
The largest Alphorn ensemble consisted of 366 musicians who played various songs on the Gornegrat mountain near Zermatt, Switzerland, on 20 August 2009.

The event was held to celebrate the 111 birthday of the "Gornegrat Bahn", the mountain railway that is going up the Gornegrat Mountain. They played 6 different songs. The concert lasted for around 20 minutes.