Katy Perry Firework - A Capella Cover - Mike Tompkins - Beatbox. Rolling In The Deep - A Cappella Cover - Adele - Mike Tompkins - Beatbox. Michael Jackson A Capella Cover - P.Y.T (Pretty Young Thing) - Mike Tompkins. Forever - Chris Brown - A Capella Cover - Mike Tompkins. All Night Long - Demi Lovato - Mike Tompkins - A Capella - Official - Feat. Timbaland - Unbroken. The Christmas Rush - Mike Tompkins - (A Capella) Coldplay - Paradise - A Capella Cover - Mike Tompkins.