JustMandi: EPISODE 3 OF THE #MandiMashUps I think I may have a rebellion on my hands... With apologies to @drsnax , @soerenhjernoee & @fred-on-bass .... you laid down such a great track. You are all ace and I am a massive nerd ruining your good work! #Mashup #vocals #vocal #acapellaapp #harmony #harmonies #melody #choral #backingvocals #comedy #collab #joinmycollab #cover #acapella #greenday #titanic #celinedion