- Word UpPerformed by Kim Young GeunVoice: Original Soundtrack
- VoicePerformed by Kim Yoon AhVoice: Original Soundtrack
- My Ears Are OpenPerformed by ChangmoVoice: Original Soundtrack
- VoicePerformed by Kim Yeon JiVoice 2: Original Soundtrack
- I Got Your BackPerformed by Black NineVoice 2: Original Soundtrack
- I Hear YouPerformed by YeseoVoice 2: Original Soundtrack
- Perfect AsymmetryPerformed by Desolate CircleVoice 2: Original Soundtrack
- Let Me Hear Your VoicePerformed by myunDo, Choi Seo HyunVoice 2: Original Soundtrack
- Stay TherePerformed by DMEANORVoice 2: Original Soundtrack
- I Can Hear You (Voice Main Title Metal Ver.)Performed by GaemiVoice 2: Original Soundtrack
- VoicePerformed by DiabloVoice 3: Original Soundtrack
- VoicePerformed by Ga EunVoice 3: Original Soundtrack
- Open Your EyesPerformed by BLOOVoice 3: Original Soundtrack
- In My HeadPerformed by Mad ClownVoice 3: Original Soundtrack
- WMB (Where's My Boy)Performed by Unofficialboyy, Bully Da Ba$tardVoice 3: Original Soundtrack
- BreathPerformed by Park Soo Jin Feat. Young KayVoice 3: Original Soundtrack
- The Voice 3Performed by GaemiVoice 3: Original Soundtrack
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