Davies has also written a number of lighter orchestral works such as Mavis in Las Vegas and An Orkney Wedding , with Sunrise which features the bagpipes and was played at the Last Night of the Proms in 1992 ( with a bottle of whisky being passed round ) . Davies 's lighter orchestral works have included Mavis in Las Vegas and Orkney Wedding , With Sunrise ( which features the bagpipes ) , as well as a number of theater pieces for children and a good deal of music with educational purposes .