Brian Ferneyhough Complete Piano Music  Ian Pace, piano (Ben Smith, piano on Sonata for Two Pianos) Metier CD   Marc Yeats The Anatomy of Melancholy Ian Pace, piano Prima Facie CD   Ian Pace is one of the finest interpreters of complex contemporary music currently active. Two recent recordings of music by British composers of exquisitely intricate scores – Brian Ferneyhough and Marc Yeats – serve to further cement his reputation as the go-to artist for this repertoire.    Brian Ferneyhough studied with Klaus Huber and others, but a great deal of his early work in the 1960s consisted of