The guys who institutionalized the swamp as being a legitimate geographic feature to sing about in metal music are back with their seventh studio album. At first look, the album title seems really silly. After all, who the heck makes a portmanteau word out of “swamp” and “symphony”? And then proceed to up the WTF factor by stringing it together with “seventh” to coin a phrase that seems to be referring to cello metal group Apocalyptica’s last album?