The new Grange Park Opera at Horsley is amazing, as everyone who visits it must agree. In less than a year a pretty large, comfortable theatre, with excellent acoustics and a large stage, has been erected from nothing, and among the first productions is one of Die Walküre, a demanding work in all respects, and one which, when it is largely successful, as the performance I went to was, provides an exalting and moving experience such as few works can.