| Business | Phone |
| A Aaa Silver Platter D J's Columbia 21044 | (410) 997-0101 |
| A Aaa Silver Platter Dj's 10254 Rutland Round Rd, Columbia 21044 | (301) 881-8003 |
| Abbey Road Deejays 9050 Red Branch Rd, Columbia 21045 | (410) 730-6300 |
| Bobby Nyk-Harmonyk Sounds 9430 Penfield Rd N, Columbia 21045 | (410) 997-7113 |
| Bristol Sounds Disc Jockeys 8775 Centre Park Dr # 155m, Columbia 21045 | (301) 474-3000 |
| Ellen's Entertainment 5196 Even Star Pl, Columbia 21044 | (301) 596-6443 |
| In Tune Karaoke-Dj Production 7369 Fawn Point Way, Columbia 21045 | (410) 309-0111 |
| Pros Entertainment Svc 10015 Old Columbia Rd, Columbia 21046 | (410) 290-9393 |
| T & T Disc Jockeys 6671 Farbell Row, Columbia 21045 | (301) 596-2019 |
| Timeless Music Columbia 21046 | (410) 381-5444 |