Izvleček: Zbirka skladb Jacobusa Handla -Gallusa z naslovom Sacrae cantiones se je ohranila samo v enem izvodu, in to v Gdansku in Varšavi. To ni bila nova izdaja, temveč le ponatis četrtega zvezka skladateljevega monumentalnega dela Opus musicum, tiskanega v Pragi leta 1590, s spremenjeno naslovnico. Avtor razprave navaja razloge, ki kažejo na to, da je delo Sacrae cantiones nastalo na pobudo Georga Handla, skladateljevega brata in tiskarja, ki je na ta način upal povečati možnosti prodaje preostalih izvodov zbirke Opus musicum, ki so po skladateljevi smrti ostali še neprodani. Ključne besede: Jacobus Handl -Gallus, glasbeno tiskarstvo, Georg Handl.Abstract: A copy of Sacrae cantiones, a collec tion of compositions by Jacob Handl -Gallus published in 1597 in Nuremberg, is preserved as a unicum in Gdańsk and in Warsaw. Howev er, this is not a new edition but merely a copy of the fourth volume of the composer's Opus musicum, printed in Prague in 1590, with a changed title-page. The author presents arguments to show that the Sacrae cantiones were created on the initiative of Georg Handl, the composer's brother and printer, who in this way hoped to increase the chance of selling the rest of the ex amples of the Opus musicum that remained in stock after Jacob's death.