| Business | Phone |
| Boe's Strings Inc 26 S Market St, Frederick 21701 | (301) 662-0750 |
| Bradley Broadcast Sales 7309 Grove Rd # D, Frederick 21704 | (301) 682-8700 |
| Duet With Music Inc 5500 Buckeystown Pike # 690, Frederick 21703 | (301) 695-3838 |
| Guitar Network 8306 Edgewood Church Rd, Frederick 21702 | (301) 639-4288 |
| Make 'N' Music Inc 7540 N Market St, Frederick 21701 | (301) 662-8822 |
| Music & Arts Ctr 1170 W Patrick St # I, Frederick 21703 | (301) 694-0007 |
| Music & Arts Ctr 4626 Wedgewood Blvd, Frederick 21703 | (301) 620-4040 |
| Tone Czar 3829 Bush Creek Dr, Frederick 21704 | (301) 874-3999 |