This requires a friend with a Crota checkpoint, ready and waiting when you need it, every time. And I'd wager it's quicker to kill the Deathsinger (under 3 minutes) than it is to return to orbit and load back into the game. The Deathsinger is easy to kill every time, even with two people. And on top of all of that, you get the satisfaction of properly completing a very easy section of a video game.