VIDEO PODCAST: John Dante Prevedini leads a discussion about Youth Involvement in Classical Music - this specially extended illustrated feature includes contributions from Christopher Morley, Gerald Fenech, Halida Dinova, Patricia Spencer and Roderic Dunnett.
Rosin is solidified resin taken from pines and other plants and trees, mostly conifers. It's made by heating liquid resin to evaporate the liquid.
In music, it's used in blocks or cakes by string players, who rub it on their bow hair to help make their instruments' strings vibrate clearly. Some types of rosin are mixed with gold, iron, silver, tin or beeswax to modify the friction and (possibly) the tone produced.