| Business | Phone |
| Dups Joint Studio 338 W Lexington Ave, El Cajon 92020 | (619) 588-2581 |
| Hit Single Recording Studios 1935 Friendship Dr # C, El Cajon 92020 | (619) 258-1080 |
| Kelley Co El Cajon 92021 | (619) 334-9300 |
| Kings Ransom Records Recording 1153 Peach Ave # B, El Cajon 92021 | (619) 447-1587 |