The 1 episode you mentioned is home of the brave. This is the star-spangled banner, popularly called the song of the star-spangled banner. The version in the movie can't be found online. That's how I found this problem.

The second episode you said, the soundtrack is called "Why did we fall! But they sang a hymn, and Hans Zimmer wanted to add it to Bain's theme song. Based on Moroccan Arabic dialect, the pronunciation is close to "Dey-Shaybah Sahrah"-translated as "He will rise", and the creative intention is to imply a distant and isolated culture. (This passage is taken from the supplement "The Dark Knight Trilogy Film Decryption Report" published by trendy electronic publishing company.) The soundtrack with this language as an element can be heard in the second half of Gotham's "Rockoing".

I hope my answer will satisfy you!