The Fierro are:
- Federico Terranova - Violin
- Pablo Jivotovschii - Violin
- Bruno Giuntini - Violin
- Juan Carlos Pacini - Viola
- Alfredo Zuccarelli - Cello
- Yuri Venturín - Double bass
- El Ministro - Bandoneon
- Julio Coviello - Bandoneon
- Pablo Gignoli - Bandoneon
- Eugenio Soria - Bandoneon
- Santiago Bottiroli - Piano
- Walter "Chino" Laborde - Vocals
and also
- Walter "Tano" Coccaro
- Hernán Coviello
- Marta Del Pino
- Mariela Lobo
- Pablo Rey
- María Zago