I know what this one is, but since I have already posted the answer to another one, I'll leave this one for someone else to figure out. Edit: When I was quoting Martin, I inadvertently clicked the thumbs-up icon, so after I posted, I clicked the thumbs-up icon in this post to see what would happen.
Ha ha. Well count me as that someone. That's the first one I've solved. These are pretty difficult for me.
I can solve most of them, but I don't know how Martin comes up with them. After he posted one that includes Frida's name, I tried to come up with one that includes Agnetha's name, but I couldn't. It is difficult. As for ABBAgrams that include Bjorn's and Benny's names, if I'm not mistaken, it is impossible to create one that includes Bjorn's name, because the only ABBA titles that contain the letter J are I Am Just A Girl, Just Like That, and Just A Notion, and none of them contains all of the letters in "Bjorn". There are two ABBA titles that contain all of the letters in "Benny", but it is probably impossible to create an ABBAgram from the title Me And Bobby And Bobby's Brother, what with all those B's, but perhaps it is possible to create an ABBAgram from the title Burning My Bridges.