| Song | Motive -key to my heart- |
| Artist | IA |
| Album | IA THE WORLD ～鍵～ |
| [00:00.00] | 作曲 : Tiara |
| [00:01.00] | 作词 : Tiara |
| [00:32.6] | 壊れそうなほど怯えてるの |
| [00:37.7] | 悲しい雨が降り止まずに |
| [00:42.43] | あの日交わした約束も涙も |
| [00:47.39] | キレイことだけでは止められない |
| [00:52.83] | with you 心の鍵さえ |
| [00:55.46] | dreaming 何もかも預けたくて |
| [00:58.15] | only once again 吐息混じりの優しい言葉 |
| [01:03.27] | lonely 触れ合わなければ |
| [01:05.91] | be with you， I nothing is understand foreve |
| [01:08.83] | only love again時を重ねてく |
| [01:11.68] | this moment your in mind |
| [01:24.64] | あの頃はいつも笑ってた |
| [01:29.78] | 悲しいが雨び起こして |
| [01:34.98] | 出会わなければ想いも傷跡も |
| [01:40.5] | 苦しみの中から連れ去って |
| [01:45.43] | with you 笑の数だけ |
| [01:47.89] | dreaming 心こと絡まるほど |
| [01:50.73] | only once again 消せない気持ちは寂しい記憶 |
| [01:55.83] | lonely触れ合わなければ |
| [01:58.34] | be with you , I nothing is understand forever |
| [02:01.21] | only love again時に身を委ね |
| [02:04.10] | this moment , your in mind |
| [02:37.93] | with you心の鍵さえ |
| [02:40.31] | dreaming何もかも預けたくて |
| [02:43.18] | only once again吐息混じりの優しい言葉 |
| [02:48.20] | lonely 触れ合わなければ |
| [02:50.71] | be with you , I nothing is understand forever |
| [02:53.48] | only love again 疑う気持ちは抑えきれなくて...... |
| [02:58.38] | with you戸惑うしぐさに |
| [03:00.65] | dreaming心こと奪われても |
| [03:03.44] | only cry for you確かめ合うように愛しさあふれて |
| [03:10.60] | be with you , only cry for you |
| [00:00.00] | zuò qǔ : Tiara |
| [00:01.00] | zuò cí : Tiara |
| [00:32.6] | huài qiè |
| [00:37.7] | bēi yǔ jiàng zhǐ |
| [00:42.43] | rì jiāo yuē shù lèi |
| [00:47.39] | zhǐ |
| [00:52.83] | with you xīn jiàn |
| [00:55.46] | dreaming hé yù |
| [00:58.15] | only once again tǔ xī hùn yōu yán yè |
| [01:03.27] | lonely chù hé |
| [01:05.91] | be with you, I nothing is understand foreve |
| [01:08.83] | only love again shí zhòng |
| [01:11.68] | this moment your in mind |
| [01:24.64] | qǐng xiào |
| [01:29.78] | bēi yǔ qǐ |
| [01:34.98] | chū huì xiǎng shāng jī |
| [01:40.5] | kǔ zhōng lián qù |
| [01:45.43] | with you xiào shù |
| [01:47.89] | dreaming xīn luò |
| [01:50.73] | only once again xiāo qì chí jì jì yì |
| [01:55.83] | lonely chù hé |
| [01:58.34] | be with you , I nothing is understand forever |
| [02:01.21] | only love again shí shēn wěi |
| [02:04.10] | this moment , your in mind |
| [02:37.93] | with you xīn jiàn |
| [02:40.31] | dreaming hé yù |
| [02:43.18] | only once again tǔ xī hùn yōu yán yè |
| [02:48.20] | lonely chù hé |
| [02:50.71] | be with you , I nothing is understand forever |
| [02:53.48] | only love again yí qì chí yì...... |
| [02:58.38] | with you hù huò |
| [03:00.65] | dreaming xīn duó |
| [03:03.44] | only cry for you què hé ài |
| [03:10.60] | be with you , only cry for you |