Hráč (in English: player) is an album of Pavol Hammel and Prúdy published in 1975 by Opus.
He left the conservatory after three years to become a member of the group Prúdy, and contributed to the legendary album Zvoňte zvonky.
Šlehačková princezna (at CD version: Šľahačková princezná; in English: Cream Princess) is an album of Pavol Hammel and Prúdy published in 1973 at Supraphon.
Sophie May wrote her Prudy Books in Norridgewock, which probably showed the sort of life Nathan and his older brother Charles Fletcher Dole (1845–1927), lived.