Arnold Bax's fifth symphony was heavily influenced by, and dedicated to, this composer. The firstmovement of this composer's 
Arnold Bax's fifth symphony was heavily influenced by, and dedicated to, this composer. The firstmovement of this composer's sixth symphony is based on the stepwise ascendancy of the D Dorian mode,which permeates the whole work. This composer's only mature string quartet is subtitled "Voces intimae".His fourth symphony opens with the notes C-D-F sharp-E; that symphony has a third movement Il tempolargo and is quite grim due to its composer's brush with throat cancer. This composer saw the symphony asa musical process in which "profound logic" connects the motifs, whereas Mahler thought it "must be likethe world". Willy Burmester vowed to never play this composer's D minor violin concerto after twoversions were premiered without him. His seventh symphony is remarkable for only having one movement.For 10 points, identify this composer of many tone poems based on the Kalevala, as well as Finlandia.
Arnold Bax's fifth symphony was heavily influenced by, and dedicated to, this composer.
Jean Sibelius [or Johan Julius Christian Sibelius]