First performed in 2007 by James Levine and the Boston Symphony, Charles Wuorinen’s Eighth is his most recent symphony to date. ... The text suggested to Wuorinen a kind of symphonic progression, a fast-slow-fast structure in which each movement is dominated by a single type of material. It generates wiry, energetic music, sometimes densely contrapuntal, sometimes thinning out into a flamboyant instrumental solo, and all very much in the style of late Schoenberg and serial Stravinsky ... Two years earlier, the Fourth Piano Concerto had been a commission from Levine and the BSO, too – one of a number of pieces that Wuorinen has composed for Peter Serkin. It’s marginally more compact and a bit less prickly than the symphony, but it remains a formidably rigorous piece.  Andrew Clements