| Business | Phone |
| Bob Gutierrez Quartet 1871 Lexington Ave, San Mateo 94402 | (650) 345-6080 |
| Capobianco Orchestras San Mateo 94401 | (650) 347-8778 |
| Crescendo Recording Management San Mateo 94401 | (650) 343-2757 |
| Golden Chordsmen 3555 S El Camino Real # 202, San Mateo 94403 | (650) 344-7464 |
| Masterworks Chorale Society 1700 W Hillsdale Blvd, San Mateo 94402 | (650) 574-6210 |
| Partners-3 Entertainment 20 N San Mateo Dr, San Mateo 94401 | (650) 375-8252 |
| Ragazzi-Peninsula Boys Chorus 20 N San Mateo Dr # 9, San Mateo 94401 | (650) 342-8785 |
| Rob Hart Drum Studio San Mateo 94401 | (510) 888-1143 |
| Ron Borelli Accordionist San Mateo 94403 | (650) 574-5707 |