Taking the stage at Woodstock, Santana was a little-known Latin rock group from San Francisco. When they walked off, they were an undeniable legend. The appearance was a perfect prologue to the debut, self-titled album that followed just weeks later. 1969 was an epic year Santana - their groundbreaking album and the performance at Woodstock would define them and their virtuosic guitarist, Carlos Santana, for years to come.