- days in the sun 前半beauty and the beastVocalHarley◇Witcher
- 闇が広がる / コラボ用ラミン・カリムルー&城田優Chorus2collabHarley◇Witcher
- FireworkKaty PerryVocal1collabHarley◇Witcher
- Ugly HeartG.R.L.Vocal2collabHarley◇Witcher
- Ugly HeartG.R.L.Chorus1collabHarley◇Witcher
- Telephone (glee ver.) コラボ用Glee Cast / Lady GagaNot Selected2collabHarley◇Witcher
- Something Just Like This - acousticThe Chainsmokers & ColdplayNot Selected1collabHarley◇Witcher
- 眩暈鬼束ちひろNot Selected1collabHarley◇Witcher
- あゝオオサカdreamin' night#どついたれ本舗Vocal1collabHarley◇Witcher
- part of your worldfrom Walt Disney's The Little MermaidNot Selected1collabHarley◇Witcher