Who Won. Team Whistle OR Team Say Somethin COMMENT BELOW. This is a contest with MattyBraps Flo Rida whisle cover and Johnnyosings Flo Rida Whistle Cover VS Carson Lueders Austin Mahone Say Somethin Cover and Nathan C Austin Mahone Say Somethin Cover. These are my favorite youtube channels any other young talent please share with me for future videos. Watch their full videos below.