The classical music source CD will have several suites, say, and each suite is recorded as three, four, or more movements, each having its own track. If I add one suite to my mix, and play it back "randomized", the suite doesn't stay together and play back in sequence. Instead, a movement from this one, a movement from that one, etc, etc. What I want from my randomization, is one suite from this composer, another from someone else, etc. But I need the whole suite each time.