| Business | Phone |
| Dean Lesher Regional Center 1601 Civic Dr, Walnut Creek 94596 | (925) 943-7469 |
| Contra Costa Children's Chorus 1963 Tice Valley Blvd, Walnut Creek 94595 | (925) 945-7101 |
| Contra Costa Wind Symphony 163 Lancaster Rd, Walnut Creek 94595 | (925) 944-5392 |