《孩子！》（I yah!）是韓國音樂團體H.O.T.的第四張錄音室專輯，1999年9月15日發行，同名主打歌〈孩子！〉以韓國海洋樂園夏令營大火事件為背景，紀念因大人疏忽而在火災中喪生的19個孩童，呼籲社會關注兒童權益[1][2]。在台灣由艾迴唱片公司代理發行。
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| 1. | 鬪志 ／ 투지 (Get It Up!) | 文熙俊 | 文熙俊 | 4:11 |
| 2. | 戰爭（談話） ／ 전쟁 (TALK) | | | 1:27 |
| 3. | 兒童與新聞（1999年6月30日SBS新聞） ／ 아이들 & News (TALK, 1999/6/30 SBS 뉴스 중) | | | 1:43 |
| 4. | 孩子！ ／ 아이야! (I yah!) | 劉英振 | 劉英振、Groovie K | 4:37 |
| 5. | 天空和夢想（談話） ／ 하늘 꿈 그리고 (TALK) | | | 1:20 |
| 6. | 你喜歡我的方式 ／ The Way That You Like Me | 劉英振 | 劉英振、劉翰振 | 4:36 |
| 7. | 我的妳 ／ 나의 너 (My Girl) | 安七炫 | 安七炫 | 3:44 |
| 8. | 8月15日（韓國第二次獨立） ／ 8.15 (제2의 독립을 위하여...) | 文熙俊 | 文熙俊 | 4:32 |
| 9. | 信念（談話） ／ 신념 (TALK) | | | 0:23 |
| 10. | 韓國的驕傲 ／ Korean Pride | 安勝浩 | 安勝浩 | 3:44 |
| 11. | 最後的聲音（談話） ／ 마지막 음성 (TALK) | | | 0:56 |
| 12. | 孤注一擲 ／ Do or Die | 張佑赫 | 張佑赫 | 3:43 |
| 13. | 告白（談話） ／ 고백 (TALK) | | | 0:46 |
| 14. | 祝福 ／ 축복 (Celebrate) | 安七炫 | 安七炫 | 5:00 |
| 15. | 朋友（談話） ／ 친구 (TALK) | | | 2:19 |
| 16. | 靈魂 ／ 영혼 (Soul) | 文熙俊 | 文熙俊 | 4:21 |
| 17. | 笑聲（談話） ／ 웃음 (TALK) | | | 3:00 |
| 18. | 噗哈哈 ／ PU HA HA | 李在元 | 李在元 | 6:20 |
| 19. | 烏紗帽（詩人趙芝薰的作品） ／ 사모 (조지훈 시인의 작품) | | | 2:23 |
| 20. | 歡喜 ／ 환희 (It's Been Raining Since You Left Me) | 安七炫 | 安七炫 | 4:20 |
| 21. | 逃脫（談話） ／ 탈출 (TALK) | | | 1:11 |
| 22. | 重新開始 ／ 다시 시작해 (Forever Song) | 李在元 | 李在元 | 4:15 |
| 23. | 謝謝（談話） ／ 고마워 미안해 (TALK) | | | 2:22 |
| 24. | 謝謝，對不起 ／ 고마워 미안해 (Together, Forever) | 安七炫 | 安七炫 | 4:07 |
| 总时长： | 1:15:20 |
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