an Entity references as follows:
4 concertos pour flûte / C. Ph. E. Bach, comp.; Aurèle Nicolet, fl.; Netherlands Chamber Orchestra; David Zinman, dir. / C. Ph. E. Bach, comp.; Heinz Holliger, htb; English Chamber Orchestra; Raymond Leppard, dir. / C. Ph. E. Bach, comp.; Ursula Holliger, hrp