Pirastro Perpetual Viola String SET 4/4 Cello Rosin Sanctus is a unique formula

Sanctus is a unique formula that combines two separate parts in a single cake of rosin

and shifting exercises

Violin bow by the Jérôme Thibouville-Lamy firm circa 1920s

5 (Squire)

In the 1970's

Pirastro Perpetual Viola String SET 4/4 Cello Rosin Sanctus is a unique formulaThe impressive tonal potential of our Perpetual product line provides fullness and radiance with an overwhelming ease. An important and absolutely remarkable feature of the Perpetual is their immediate reliability which allows the player to trust in the strings tuning stability directly after installation. Perpetual strings offer: enticing playability vast tone volume clearly focused sound projection optimal response