Who are a cappella persons playing voice?

8

Steven Dorian

singer
8

Oliver Gies

8

Kirstin Maldonado

singer
7

Mitch Grassi

American singer
6

Barry Carl

American opera singer
6

Peter Hollens

American singer
5

Alaa Wardi

Saudi Arabian musician, composer, sound engineer of Iranian parentage
4

Scott Leonard

American singer
3

Marcella Puppini

Italian singer
3

Sebastian Krumbiegel

German actor and singer
2

Alan Paul

American singer
2

Bernice Johnson Reagon

American singer
1

Jerry Lawson

American singer
1

Tagaq

Canadian singer and author.
1

Evynne Hollens

American singer
1

Bobby McFerrin

American jazz vocalist
1

Wes Carroll

American musician
0

George Baldi III

musician
0

Sean Altman

American musician and songwriter
0

Deke Sharon

American musician