The Roland CR-68 is a very simple preset driven drum machine of the 1970's. Often thought of as a scaled-down version of it's bigger brother the CR-78, the CR-68 featured 34 preset rhythms that allowed you to scan through 5 different variations of that rhythm as well as controls for balance and accent with Roland's classic Fill-In section. Unlike the CR-78, this model did not allow you to program your own patterns.