Ora Cogan

11 Titles
44 Tracks

Onalea Gilbertson

1 Titles
0 Tracks

Al Owchar & Rob Osberg

1 Titles
17 Tracks

Olav Rixen & Ulrich Fausten

1 Titles
12 Tracks

Oliver Swain

1 Titles
10 Tracks

Ozzie Williams with Betty Carr and Charles Baldour

1 Titles
2 Tracks

Johnny Osbourne

8 Titles
25 Tracks

Gerry O'Kane

1 Titles
12 Tracks

Andrew O'Brien James

1 Titles
12 Tracks

Otis Gayle

8 Titles
50 Tracks

Olivia Korkola

1 Titles
13 Tracks

Oscar Thiffault

34 Titles
78 Tracks

Olaf Sveen

28 Titles
35 Tracks

Diane Oxner

4 Titles
50 Tracks

Karen Oxley

6 Titles
30 Tracks

Tate Overholt and Phillips

1 Titles
8 Tracks

John Oswald

23 Titles
176 Tracks

Al Oster

12 Titles
81 Tracks

Johnny Osborne & Jerry Estivon All Stars

1 Titles
2 Tracks

Anita Ortez

3 Titles
22 Tracks

The Organ

8 Titles
22 Tracks

Dennis Olson

3 Titles
12 Tracks

George Olliver

5 Titles
27 Tracks

Duane O'Kane

3 Titles
11 Tracks

Alanis Obomsawin

2 Titles
12 Tracks

Mary O’Hara Margaret

3 Titles
11 Tracks

Oscar* McLollie

4 Titles
25 Tracks

Oliver Jones

24 Titles
98 Tracks

Ollie Case

3 Titles
10 Tracks

Omar Blondahl

18 Titles
166 Tracks