P.P. Polskie Nagrania Muza

No such label or company ever existed. Use Polskie Nagrania Muza as a label where both name "Polskie Nagrania" and "Muza" are used. Use Polskie Nagrania for company credits and as a label for releases where only "Polskie Nagrania" is used on the label (releases issued between mid 1955 and mid 1956).