is Mark Miller top or bottom?

Meeting my Youtube crush: A day with Mark Miller

I Believe - Mark Miller- Northern Lights Chorale

Mark Miller — Gospel Singing (Promo Video)

Church choir sings "Draw the Circle Wide" (Gordon Light, Mark Miller) | Eastminster United Church

Mark Miller VISIBLY ANGRY About Carney SNUBBING Him - Champagne GASLIGHTS Canadians On Economy

I Believe SATB - Mark Miller - CGA1310