- MarthaTom Waitsボーカル1コラボKengo (a.k.a. beagle)
- MarthaTom WaitsピアノKengo (a.k.a. beagle)
- And So It GoesBilly Joelボーカル1コラボKengo (a.k.a. beagle)
- And So It GoesBilly JoelピアノKengo (a.k.a. beagle)
- HomeMichael Bubleボーカル1コラボKengo (a.k.a. beagle)
- Up Where We BelongJoe Cocker & Jennifer Warnesボーカル1コラボKengo (a.k.a. beagle)
- Hark! The Herald Angels SingTake6ボーカルKengo (a.k.a. beagle)
- Baby, It's Cold OutsideFrank Loesserコーラス2コラボKengo (a.k.a. beagle)
- No More Blue ChristmasNatalie Coleボーカル1コラボKengo (a.k.a. beagle)
- You can have me anytimeBoz Scaggsボーカル2コラボKengo (a.k.a. beagle)