The soundtrack contains music composed by Junichi Masuda, Shota Kageyama, Hitomi Satō, Gō Ichinose, Morikazu Aoki, Minako Adachi, and Satoshi Nohara, and is arranged by Shota Kageyama, Hitomi Satō, Gō Ichinose, and Minako Adachi.
Your $9.99 gets you 173 tracks to evoke the Unova region. You can download it here:
The final upcoming release in the Super Music Collection will be Pokémon Black and White 2.
Pokémon X and Y, Pokémon FireRed and LeafGreen, Pokémon Ruby & Pokémon Sapphire, Pokémon HeartGold and SoulSilver, and Pokémon Diamond and Pearl collections have already been released to iTunes as part of the Super Music Collection.