| Business | Phone |
| Music Companie Po Box 706, Los Angeles 90078 | (323) 939-0599 |
| Catherine Hansen Vocal Studios 400 Hauser Blvd, Los Angeles 90036 | (323) 935-7870 |
| Hamilton Williams Vocal Studio 6777 Hollywood Blvd # 1200, Los Angeles 90028 | (323) 462-4666 |
| Andrea Danae 7660 Beverly Blvd, Los Angeles 90036 | (323) 938-4597 |
| Lori Moran Music Studio 6399 Wilshire Blvd, Los Angeles 90048 | (323) 653-5929 |
| Susu-Mago Vocal Studio 6399 Wilshire Blvd # 1021, Los Angeles 90048 | (323) 655-8484 |
| Micah's Professional Vocal 7561 W Sunset Blvd, Los Angeles 90046 | (323) 851-0124 |
| Voice Mechanic 7220 1/2 Melrose Ave, Los Angeles 90046 | (323) 937-2565 |
| Kong Wiet Senior Citizens Assn 454 Jung Jing Rd, Los Angeles 90012 | (213) 617-2919 |
| Alexander-Pillin Music Studio 4913 Melrose Ave, Los Angeles 90029 | (323) 464-0515 |
| For The Good One 610 S Serrano Ave, Los Angeles 90005 | (213) 389-0700 |
| Gloria Bennet Voice Studio 845 S Windsor Blvd # 7, Los Angeles 90005 | (323) 851-3626 |
| Mr Music Learning Center & Rcrdng 4034 Buckingham Rd, Los Angeles 90008 | (323) 291-1678 |
| Amber Q Vocal Studios Los Feliz Blvd, Los Angeles 90039 | (323) 445-0573 |
| Amber Q Vocal Studios 2575 North San Fernando Road, Los Angeles 90065 | (323) 445-0573 |