Oryginalny tekst: Purrfect 4-String Bass Method. Purrfect 4-String Bass Method by Brian Emmel. Brian Emmel. Double Bass sheet music. For Bass.
Tłumaczenie: Purrfect Metoda 4-String Bass. Purrfect 4-String Bass Metoda Briana emmel. Nuty Bass podwójnie. Bass. Bas. 56 stron. HL.201.