Premise: Deliver Us Tour was a concert tour by band Darkest Hour, taking place from late 2007, in support of their fifth studio album "Deliver Us" and finishing in December 2008. The tour started shortly after the Undoing Ruin Tour ended, earlier in December 2006.
Hypothesis: The band Darkest Hour had released no less than four studio albums by the time they embarked on the Deliver Us Tour during the first decade of the 21st century