| Mary Margaret O'Hara | Canadian recording artist, sister of actress Catherine O'Hara |
| O'Hara Bands | O'Hara bands and groups |
| Burlesque | Burlesque, vaudeville, etc. |
| Christian or Church Music | O'Hara performers of Christian and sacral music |
| Classical Music | O'Hara classical musicians |
| Composers | O'Hara composers and song writers |
| Country Music | O'Hara country musicians |
| Irish Music & Dance | O'Hara performers, and ‘O'Hara’ themes in Irish music |
| Jazz Music | O'Hara jazz musicians |
| Popular Music | O'Hara performers of popular music |
| Musicals | O'Hara associations with musicals |
| Music Teachers | O'Hara as music teachers or educators |
| Rock Music | O'Hara performers of rock music |
| Other Styles | O'Hara performers of other musical styles |
| Vocalists | O'Hara vocalists and singers |