Checked Elly's barrier, it is indeed "Homura vs Charlotte", Gradus Prohibitus sounded before that.
So, judging by the episode breakdown the wikis offer, we can be looking forward to the following tracks:
-
the piano melody based on Puella in Somnio (first ap. in episode 2, around 13:00)
-
Witch battle track 1 (Mami vs Charlotte, also notable in ep 9)
-
Witch battle track 2 (Homura vs Charlotte, also Sayaka vs Elly and Sayaka vs Kyouko)
-
Sayaka-related cello theme (first ap. at the beginning of ep 4, most heart-wrenchingly notable during Sayka's... Sayaka's... in ep 11, to be short
) [I tend to confuse cellos and violas, so feel free to correct this
]
-
sad piano track, Puella Wiki dubs it "Madoka's Grief" (first ap. in episode 4, also notable in episodes 7 (Madoka/Sayaka talk) and 9 (Madoka/Kyouko talk right before Terror Adhaerens)).
-
Sayaka's theme, the Wiki lists it as the arrangement of Conturbatio, but these very guys separated two versions of Puella in Somnio, so don't ask me about their logic.
This track debuts in ep 5 (with the highly notable reprise in ep 7), later than Conturbatio, but I'm really inclined to consider it the primary version.
-
The "Food Chain" cello-based theme, debuts in ep 5, reprised in eps 7 and 8
-
the melody during Madoka/Junko talk in ep 6
(btw, Clementia plays right after it )
-
the Soul Gem theme from ep 6
-
the quiet bell rendition of Sis Puella Magica (episode 7, also in the most tearjerking scene of ep 10 and at the start of ep 11)
-
Kyouko's theme accompanying her backstory (although it also plays in ep 11 during Junko/Kazuko talk)
-
full instrumental rendition of Sis Puella Magica, ep 7 at the end of Sayaka/Kyouko talk in the church
-
the suspense track during Sayaka/Homura talk (ep 8)
-
Octavia's theme from ep 9
-
Badass Homura theme... er, I mean the track that accompanies Homura in TL4 (ep 10)
-
Walpurgis Night theme (ep 11)
-
the pensive strings-based theme in ep 11 (basically "Homura losing hope")
-
the grand "Becoming Hope" theme in ep 12
-
the "end of the world" track right after it (and before Madoka Gambit really comes into play
)
-
the piano melody during Homura/Junko talk (ep 12)
-
the finale accompanying Homura/Kyuubey talk (ep 12)
Ultimate Badass Homura theme, if you like
- and... what else? Ah,
the piano track from the CMs, hopefully they'll release it.
It sums up to 22 tracks. A delicious list, but enough to make one nervous: 13 tracks against 22? And if such an uneven split-up is not in Sony's plans, we may end up with unreleased tracks.
Of course, there's another idea: we get four more tracks in the upcoming CD dramas which adds up to 26 tracks... further split into OST 2 and OST 3
Sounds interesting, although rather trolling (and in that case we're SO not getting WN theme and "Becoming Hope" theme until September, I'm afraid
).