Written two years before his death in 1987, Morton Feldman's Piano and String Quartet is a shimmering, pristine musical event. Contrasting Aki Takahashi's widely-spaced piano arpeggios with Kronos Quartet's extended chords, Feldman allows lingering sounds from either the piano or the strings to haze over many of the piece's near-silences. Kronos plays their parts with tremulous fragility, often making pointedly clear the viola's musical valley between the leading violins and the trailing cello. By the time Feldman composed this piece, he was deeply committed to extended works--chamber pieces that could telescope motifs and worry their tonality so that it warbled between hauntingly atonal and familiarly tonal singing. This is a powerful, evening piece, one that can set an extravagantly crystalline musical mood. --Andrew Bartlett