I wonder if Dutton can do for Arthur Butterworth what they did for Tony Arnell: make him better known and redress the prejudice against tonal music that he had to live through, and do it whilst he is still alive (Arnell, regretfully, passed away very recently).
To say that there is the influence of Sibelius is not very helpful: Butterworth's recorded biographical details (disc 1) point out that he took lessons from Ralph Vaughan Williams too. Yet his music is expansive, rhythmically interesting and fully in the tonal "narrative" tradition - whilst not telling a story it "speaks" without words of the emotions engendered by different landscapes (as do the works of Mahler, Vaughan Williams and Beethoven in his 6 Symphony). Butterworth himself relates pieces of music to particular places. I had not thought that Sibelius had any followers but Butterworth is about the nearest thing.
The 1957 Proms performance of the First Symphony (disc 2) is where I started. The mono BBC aircheck sound is quite clear and acceptable. The Viola Concerto turned out to be a very engaging piece that I will have to listen to several times to really know.
And that is the case for the 4 Symphony, recorded in Dutton's stunning sound and, we must suppose, sympathetically conducted by the Composer himself. This recreates the craggy "landscapes" and "spaces" of the 1 Symphony and is an altogether good experience. Butterworth is not really "like" anybody else but if you enjoy Bax, VW, Sibelius, Moeran and even a bit of Walton, then you should be able to get into Butterworth: the level of difficulty is about at Sibelius 4 or Tapiola.
I fully recommend these discs.
[Note: when I bought the recordings in the last week of June 2009 they were a mid-price disc with a free recording of the First Symphony: in other words at about half the price that Amazon seem to be offering them at on 4 July. I can only hope this is a pricing error.]