| Business | Phone |
| Dellet Music Studio 2282 Tampa Ave, El Cajon 92020 | (619) 698-0592 |
| Diana Nadel Piano Studio 522 E Chase Ave, El Cajon 92020 | (619) 440-5030 |
| Music School & Music Store 1212 N 2nd St, El Cajon 92021 | (619) 440-6712 |
| Hawk's Music Studio 530 E Main St, El Cajon 92020 | (619) 442-1880 |
| Hub's Guitar Studio 172 E Main St, El Cajon 92020 | (619) 447-8659 |