Conversation so far:
Did Avenged Sevenfold put out any records between 2006 and 2008?
On October 30, 2007, Avenged Sevenfold released their self-titled album, the band's fourth studio album.
Did Avenged Sevenfold's self titled album do well?
Avenged Sevenfold's self-titled fourth studio album debuted at No. 4 on the Billboard 200 with over 90,000 copies sold.
Did Avenged Sevenfold tour from 2006-2008?
Avenged Sevenfold headlined the 2008 Taste of Chaos tour with Atreyu, Bullet for My Valentine, Blessthefall and Idiot Pilot.

Question: What album was that tour promoting?
Self-contained rewrite: What album was the Taste of Chaos tour promoting?