 Any patient who received a market approved SJM Quadra Allure MP, Quadra Assura MP, or newer SJM CRT MP device is eligible for enrollment in the study. MultiPoint Pacing MPP programming guidance will be specified in the protocol. Patients will be followed for 12 months after implant. Data will be collected at Baseline within 30 days prior to implant, Post-Implant within 30 days following successful CRT device implant, 3, 6, 12 months and during any unscheduled follow-up visit. 