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| Key | Song | Notes | Artist |
|---|---|---|---|
| 61754 | CAROLS | Ayumi Hamasaki | |
| 34603 | Carrie | Europe | |
| 61438 | Catch You Catch Me | Cardcaptor Sakura OP1 | Megumi Hinata |
| 61119 | CHA-LA HEAD-CHA-LA | Dragon Ball Z OP | Hironobu Kageyama |
| 34604 | Champagne Supernova | Oasis | |
| 63025 | CHANCE no Junban (チャンスの順番) | AKB48 | |
| 30598 | Change the World | Phenomenon OST | Eric Clapton |
| 61059 | CHANGE THE WORLD | Inuyasha OP1 | V6 |
| 61322 | Chase the Chance | The Chef OST | Namie Amuro |
| 60907 | CHERRY (チェリー) | Spitz | |
| 62300 | CHE.R.RY | YUI | |
| 62476 | Chiisana Koi no Uta (小さな恋のうた) | Proposal Daisakusen Insert Song | Mongol800 |
| 1010 | Chikinini | Parokya ni Edgar | |
| 1011 | Chiksilog | Kamikazee | |
| 31059 | Circle of Life | Lion King OST | Elton John |
| 61348 | COLORS | Hikaru Utada | |
| 62189 | COLORS | Code Geass OP1 | FLOW |
| 62230 | Colors of the Heart | Blood+ OP3 | UVERworld |
| 30021 | Come Together | The Beatles | |
| 30822 | Complicated | Avril Lavigne | |
| 62228 | COPPELIA no Hitsugi (コッペリアの柩) | Noir OP | ALI PROJECT |
| 62190 | COUNTDOWN | hyde | |
| 30734 | Crazy | Aerosmith | |
| 31043 | Crazy in Love | Beyoncé feat. Jay Z | |
| 62804 | Crazy Moon ~Kimi wa Muteki~ (Crazy Moon～キミ・ハ・ムテキ～) | Arashi |