Written for the 30th anniversary of Boston Musica Viva (1998), Ad Parnassum is a single-movement construct of murky, mysterious tone. Stucky slowly builds his material in tension, layering motifs and falling back, building and falling back, untilfinally reaching a hammering crescendo, then quietly fading back into the ether. Steven Stucky conducts Ensemble X (a contemporary music group he co-founded in 1997) in Ad Parnassum, as it appears on the Albany album In Shadow, In Light. For advancedperf...