| Business | Phone |
| Gilbert & Sullivan Society 1177 West Loop S, Houston 77027 | (713) 627-3570 |
| Let's Go To The Opera 1517 Bracher St, Houston 77055 | (713) 465-0755 |
| Houston Ebony Opera Guild 4550 Post Oak Place Dr 100, Houston 77027 | (713) 626-7664 |
| Houston Grand Opera 510 Preston St # 500, Houston 77002 | (713) 237-8000 |
| Houston Grand Opera 510 Preston St 500, Houston 77002 | (713) 546-0200 |