Band Brothers DX website lists all the jammable tracks available in the rhythm title, including both downloadable and in-game songs. Since the list is in Japanese, we did our best to translate (read: search the internet for a translation), which we've posted after the break.
For classical music lovers (like this blogger), the in-game song list is like a piece of cake wrapped in brownie batter. Everyone else may be a wee bit disappointed, though, as the tracks only include five J-pop songs among a plethora of Mozart and the like. To keep it interesting, the classical songs are remixed in different styles, like tango, Eurobeat, pop, jazz, and more. Some unique combinations include a reggae version of Beethoven's "Pathétique Sonata" and a Famicom version of Schubert's "The Trout" (click here and here to listen to them in their original classical styles).
The list of downloadable songs is much more J-poppy, however, offering tracks like "Flavor of Life" by Utada Hikaru, which is the recurring theme of J-drama Hana Yori Dango. There are also a handful of anime songs to help tickle your J-fetish.
If you want to see both of the translated song lists for Band Brothers DX, just click on past the break.