I decided to try The Minstrel's Ballad at the start of my long weekend. With a minimum requirement of ilvl 61, he shouldn't be all that hard, what with my group being pretty decked out, right?
Are you sure that's not supposed to be minimum requirements ilvl 81? Because I don't think a way exists for a group made entirely out of ilvl 61 could take it down. My well equipped group had him down to about 25%, had the 20% Echo buff, and we hit the 10 minute mark so we all died.
Please tell me that, since it's a pre-req for something in 2.3, that he may be nerfed a bit? The menders are making a fortune off me, and all of my groups have pretty much said the same thing.