- Olga Alanis – percussion
- Juan Carlos Allende – guitar
- Sergio Alonso – harp
- Pancho Alvarez – bouzouki
- Stephen Armstrong – assistant engineer
- Hugo Arroyo – tuba, vocals, guitarron, quijada
- Ersi Arvizu – vocals
- Jose Avila – percussion
- Marisa Bautista – vocals
- Moya Brennan – vocals
- Jorge López Calderón – drums (snare)
- Rene Camacho – bass, bass (upright)
- Edmar Castaneda – harp, cuatro
- Gabriel Castañón – assistant engineer
- Paul Cohen – vocals
- Larissa Collins – art direction, package design
- Kevin Conneff – bodhrán, lilting
- Ry Cooder – guitar, piano, composer, timbales, vocals, producer, laud
- Raúl Cuellar – violin
- Robert Curto – accordion
- Lila Downs – vocals, arranger, step dancing
- Ernesto Villalobos – fiddle, jarana, vocals
- Celso Duarte – fiddle, harp, vocals
- Mary Farquharson – coordination, research
- Raúl Durrand Flores – assistant engineer
- Sofia Fojas – violin
- Arturo Gallardo – clarinet
- Julian Gonzalez – violin, arranger
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- Bernie Grundman – mastering
- Jesus "Chuy" Guzman – violin
- Carlos Henderson – bass
- Camilo Ramirez Hernandez – violin
- Eduardo Hernández – bass (electric), vocals, bass (acoustic)
- Hernán Hernández – bass (electric), vocals
- Hugo Hernandez – drums (bass)
- Jorgé Hernández – accordion, vocals
- Luis Hernández – accordion, vocals, bajo sexto
- Marcos Hernandez – vocals, huapanguera
- Ubaldo Hernandez – trumpet
- Juancho Herrera – guitar, vocals
- Don Hoffman – engineer
- Daniel García Hughes – drums (snare)
- Juan Jimenez – guitarron
- Jimmy Cuellar – violin
- Guadalupe Jolicoeur – coordination, art direction, research
- Seán Keane – fiddle
- Oscar Lara – drums
- Jeffrey Lesser – engineer
- Germán López – vihuela
- Steve Macklam – art direction
- Mariachi Santa Fe De Jesus (Chuy) Guzman – vocals
- Tríona Marshall – harp
- Neil Martin – cello
- Brian Masterson – engineer, mixing
- Bart Migal – assistant engineer, associate engineer
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- Matt Molloy – flute
- Paddy Moloney – arranger, composer, producer, liner notes, uilleann pipes, tin whistle, mixing, tin cans
- Rogelio Navarrate – clarinet
- Liam Neeson – narrator
- Niamh Ní Charra – concertina
- Adrian Nieto – mandolin, percussion
- Carlos Núñez – gaita, low whistle
- Xurxo Nunez – drums, guitar (electric), engineer
- Felipe Ochoa – vocals, requinto
- Marco Ochoa – vocals, jarana
- Van Dyke Parks – piano, accordion
- Miguel Pena – guitar
- Jon Pilatzke – fiddle, step dancing
- Martin Pradler – engineer
- Mike Riley – assistant engineer
- Alberto J. Rodríguez – assistant engineer
- Eugene Rodriguez – vihuela, arranger
- Gabriela Rodriguez – Percussion
- Javier Rodriguez – trumpet
- Juan Rodríguez – violin
- Luciana Rodriguez – vocals
- Albert J. Roman – design assistant
- Linda Ronstadt – vocals, arranger
- Yayo Serka – cajon
- Graciana Silva – harp, vocals
- Gregorio Solano – vocals, jarana
- Samuel Torres – conga, maracas, cajon
- Fabiola Truijillo – vocals
- Omar Valdez – percussion
- Chavela Vargas – vocals
- Efrén Vargas – mandolin, percussion
- Rodolfo Vazquez – engineer, field recording
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