So in the hunt for the flawless raider achievement and after multiple restarts due to stupid falling deaths my fireteam takes down the deathsinger no problem, whilst clearing the adds before crota this happens....
[EDIT] We managed to get the achievement in the end. The hardest part of the raid was surviving the fall damage when descending into the Hellmouth :-P.
[EDIT] Can't believe how many positive comments this has had, its actually front page trending! Thanks for the support guardians!