He spent most of the rest of the year resting as his recent spate of activity was straining his heart and nerves. Composing a few small pieces, he relied increasingly on alcohol. In May 1925, his Danish publisher Wilhelm Hansen and the Royal Danish Theatre invited him to compose incidental music for a production of Shakespeare's "The Tempest". He completed the work well in advance of its premiere in March 1926. It was well received in Copenhagen although Sibelius was not there himself.