Oath Bound is the sixth full-length album by Summoning. Not counting certain pieces from the soundtrack of The Lord of the Rings, "Mirdautas Vras" is the first song ever to be written entirely in the Black Speech of Mordor. The songs "Might and Glory" and "Land of the Dead" both feature a self-sung choir chorus similar to that which was used on the Let Mortal Heroes Sing Your Fame song "Farewell". Being 21 seconds longer than Dol Guldur, this album was Summoning's longest release before the release of the version of Old Mornings Dawn containing bonus tracks. It also contains the band's longest song, Land of the Dead.