Developed by a Juilliard-trained professional cellist, Magic Rosin is made from only purified pine resins with no other ingredients. Endorsed and used by top soloists, professionals, teachers, and students, Magic Rosin provides a great grip while maintaining a clear, complex tone. Hand-crafted in Minnesota, Magic Rosin™ comes in 2 formulas: Magic Rosin ™ 3G and Ultra. Ultra provides even more grip and "pop" than the 3G. Both formulas are used by all instrumentalists, though bassists and cellists tend to gravitate toward the Ultra.