- BluebirdPaul McCartney & WingsVocal1collabKosuke
- Heart Of The Country 故郷のこころPaul McCartneyVocal1collabKosuke
- Tears In My Eyes--Not Selected2collabKosuke
- へ--Not Selected1collabKosuke
- へ--Not SelectedKosuke
- 最後のドライブ (仮)--Not Selected1collabKosuke
- あは--Not SelectedKosuke
- あ--Not SelectedKosuke
- シークレット--Not Selected5collabKosuke
- シークレット--Not Selected4collabKosuke