The scene in "And the Rock Cried Out", with the gospel song intercut with the murder, is possibly my favorite scene of the show, just, like, as a use of television as a medium.

It really is just so well done! The more so the more I think about it. In addition to the song literally describing what's happening in the other storyline, and the juxtaposition of the brutal killing with the upbeat and positive (but also quite violent - Delenn's expression as she parses the lyrics is very "???") gospel song, there's also the juxtaposition of people from different species and religions coming together in the church, vs the bloody and violent fallout of Londo and G'Kar's temporary alliance: Narns and Centauri working together to the same end at last, and that end is a murder of vengeance for both races. It's an interesting underscore to G'Kar's earlier drug-fueled vision about Narns and Centauri being essentially two sides of the same bloody coin.

And that is really interesting about Franklin's arc being patterned off JMS's, I wouldn't have guessed!