Florence Easton

The Criterion Quartet

Ernestine Schumann-Heink

Henry Burr

Peerless Quartette

Max Kuttner

Ernest Hare

John Young

Berliner Lehrer-Gesangverein

Wilfred Glenn

Elizabeth Spencer

Stellar Quartet

Arthur Hall

Trinity Choir

The Savoy Orpheans

Oriole Male Quartette

Lucy Isabelle Marsh

St. John's Gospel Quartette

Robert Gayler

Vernon Archibald

Victoria Spivey

Reinald Werrenrath

Collegiate Choir

Pietro Capodiferro

Shannon Quartet