I’m not sure whether, in the title of his work An Index of Metals

(2003), composer Fausto Romitelli was making a reference to the rock genre, but there’s more than a little grind and grunge in the exhilaratingly aggressive gestures and distorted timbres he asks for from the musicians in his chamber opera.

It’s one of the five works the Seattle Chamber Players are offering in their upcoming two-day Icebreaker VII festival–all exploring the mashup aesthetic of Metals, which Romitelli referred to as “an initiatory celebration of the metamorphosis and fusion of matter . . . a path towards perceptive saturation and hypnosis, one of total alteration of the habitual sensorial parameters.” Or, as SCP clarinetist Laura DeLuca describes it, it’s “a synthesis that bombards the senses . . . a haze of Pink Floyd on steroids, complete with electric guitar combined with acoustic instruments and pre-recorded electronics synched with abstract visual images projected on three screens.” That’ll be heard Sunday; on Monday there’s Michel van der Aa’s Up-Close, in which cellist Julie Albers is represented on film as she plays live–“creating an eerie mirrored reality with an older version of herself,” DeLuca says. The three other titles, which alone should be enough to entice you: Spam!, open source, and Karaoke Etudes.

On the Boards, ontheboards.org, seattlechamberplayers.org. $12–$20 ($30 for both). 7:30 p.m. Sun., Feb. 16–Mon., Feb. 17.