an Entity references as follows:
Piano concerto No. 1 en E minor, Op. 11 / Chopin, comp.; Emmanuel Ax, p; orchestra of the Age of Enlightenment; Sir Charles Mackerras, dir. / Chopin, comp.; Emmanuel Ax, p / Chopin, comp.; Emmanuel Ax, p; orchestra of the Age of Enlightenment; Sir Charles Mackerras, dir.