Answer:
Their unique blend of folk, rock, and the pop music. Their harmonies and vocal arrangements were unlike anything thing else in the music scene at the time, and they quickly gained a following with hits like "California Dreamin" and "Monday, Monday." The group was also known for their controversial personal lives, which often overshadowed their musical accomplishments. Despite this, their music has stood the test of time and continues to be beloved by fans old and new.