The paper is devoted to Maciej Kazimierz Sarbiewski (1595-1640), a great Polish Neo-Latin poet, who achieved European fame and was known as the 'Sarmatian Horace' or 'Christian Horace' ('Horatius Sarmaticus', 'Horatius Christianus'). According to the information given in 'Dykcjonarz uczonych Polaków' (A Dictionary of Learned Poles) (1833) by the Lvov historian Father Ignacy Chodynicki (1786-1847), partially confirmed by other sources, Sarbiewski was also a composer, singer and instrumentalist who played the zither, harp and harpsichord. While brief references to the poet's musical activities can be found in a small number of currently available scholarly publications, the fact that the poet wrote musical compositions has until now been mostly ignored in musicological literature. The description given by Ignacy Chodynicki leads one to conclude that Sarbiewski's musical works represented the genre of accompanied monody, most probably of the type 'musique mesuree a l'antique'. These were primarily arrangements of classical Latin poetry, mainly lyrical, performed by the poet who accompanied himself on an instrument. Unfortunately no traces of Sarbiewski's compositions has been found thus far; this may perhaps be achieved by future research, which should undoubtedly be undertaken. A number of Sarbiewski's poetical works, among them 'Silviludia poetica', were given musical settings either by the poet himself or by musicians from the royal court. In his scientific treatises, which have come down to us in the form of manuscripts, Sarbiewski made many valuable comments on the subject of ancient music, particularly in his extensive treatise 'Dii gentium' (Pagan gods).