Elizabeth Lennox

Trinity Choir

Collegiate Choir

The Criterion Quartet

Homer Rodeheaver

Helen Clark

Royal Dadmun

Paramount Jubilee Singers

Wiseman Sextette

Marie Tiffany

St. John's Gospel Quartette

Alma Gluck

John Young

Chór Opery Warszawskiej

Mormon Tabernacle Choir

Reed Miller

Stellar Quartet

Edward P. Kimball

Henry Burr

Shannon Four

Metropolitan Quartet

Jessie Williams

Norfolk Jubilee Quartet

Elsie Baker

Chautauqua Preachers' Quartette