From the bottom of the description page:

"Finnish composer Jan Sibelius died 27 September 1957 at the age of 91.

Note: the composer is Jean Sibelius not Jan Sibelius (ref:http://en.wikipedia.org/wiki/Jean_Sibelius):

"Johan Julius Christian Sibelius was born in Hämeenlinna in the Russian Grand Duchy of Finland, the son of Swedish-speaking doctor Christian Gustaf Sibelius and Maria Charlotta Sibelius née Borg. Although known by a typical Finnish and Swedish name "Janne" to his family, during his student years he began using the French form of his name, "Jean", inspired by the business card of his seafaring uncle.[5] He is now universally known as Jean Sibelius."