| Business | Phone |
| Chamber Music Unlimited Frederick 21702 | (301) 846-0855 |
| Frederick Catoctones Frederick 21702 | (301) 631-1570 |
| Frederick Strings Frederick 21701 | (301) 695-8884 |
| Frederick Strings Quartet Frederick 21701 | (301) 695-8868 |
| Mom & Me Productions Inc Frederick 21701 | (301) 620-0035 |