 The biography of Erik Chisholm , written by John Purser with the foreword by Sir Charles Mackerras , Chasing A Restless Muse : Erik Chisholm , Scottish Modernist ( 1904 – 1965 ) , was published on 19 June 2009 . An official launch was held at the Conservatoire of Music , Birmingham City University on 22 October 2009 which was attended by his widow , his daughter Morag , two of his granddaughters and great @-@ grandsons . His widow , Lillias , married the clarinettist John Forbes . Many of his works have been released on CD , performed by pianist Murray McLachlan . 
