This recording of Vagn Holmboe’s Tenth Symphony, with Sixten Ehrling conducting the Gothenburg Symphony, appeared in 1977 on a Caprice LP; on the flip side was Nystroem’s Sinfonia Breve. A decade later I picked up a copy for my WHRB radio show “The Twentieth-Century Symphony.” Sadly, the pairing never seems to have made it to CD, although you can find a fine reading of the Tenth in BIS’s complete survey of the Holmboe symphonies, with Owain Arwel Hughes conducting. I love the work’s opening gesture, a kind of tremor that turns into sound.