Leatherwood Bespoke Rosin - Cello SuppleA warm and softer sound, consistent traction that feels velvety and rich; this recipe maintains a reliably sharp attack on the string. The supple blend can help generate a more powerful and focused sound from a softer and lighter bow with less bite. Supple can also enhance the sounds of a deep warm sounding instrument by making it sound more resonant. Supple can also soften an instrument which is too loud, bright or one dimensional in sound.