P417021 Pirastro Violino violin string set medium P310221 Pirastro Violino violin string E-1 medium P310921 Pirastro Violino violin string E-1 medium P417221 Pirastro Violino violin string A-2 medium P417321 Pirastro Violino violin string D-3 medium P417421 Pirastro Violino violin string G-4 medium