Leatherwood Viola - CrispLeatherwood's different rosin blends offer you a precise way to enhance the sound of your instrument. By choosing the Supple or Crisp recipes, or anything in between, you can optimise the brightness, clarity, warmth and richness of your sound, and vary the strength of initial attack on the string. CRISP BLEND A decisive attack, firm traction and crisp sautille; this recipe creates an undeniably forthright sound through a glassier texture. The crisp