Mateo Soto was born in Cartagena (Spain) in 1972. He studied composition at the Conservatory "Manuel Massotti Littel" of Murcia with Manuel Seco de Arpe graduating with Honours. He also expresses his gratitude to Salvador Brotons, Tomás Marco and Antón García Abril for their advice.

He has received composition awards such as "Premio SGAE 1993" (Spanish Society of Authors, Composers and Publishers), "Frederic Mompou International Award 1996" for Young Composers Competition of Joventuts Musicals of Barcelona and "Tribuna de Jóvenes Compositores 1997" (Juan March Foundation, Madrid). He has been selected in some editions of “Fifteen-Minutes-of-Fame” (USA), Isang Yun Centennial Project 2017 (USA), NETZWELLEN Social Media Piano Project 2017 (Germany), Vonk Miniature Opera Project 2017 (Netherlands) and he is winner of the “Sound-Magical-Space – S.M.S.” 2018 promoted by Patricia Kopatchinskaja and Camerata Bern (Switzerland).

His music has been performed by players, ensembles and orchestras such as Leonel Morales, Albert Nieto, Diego Fernández Magdaleno, Gabriel Escudero Braquehais, Sussanne Kessel, Martin Tchiba, Eunmi Ko, Anné-Marie Condacse, Kristin Leitterman, Paolo Carlini, Frano Kakarigi, Manuel Miján, Jesús Villa Rojo, Trío Mompou, Trio Bacarisse, Quartetto Bernini, Quatuor Tana, Spanish Brass Luur Metalls, Concertus Novo, Grupo LIM, Columbus Ohio Discovery Ensemble, London Chamber Group, London Consorts of Winds, Incontro - Ensemble für Neue Musik, Orquesta Sinfónica de Cartagena, Orquesta de Jóvenes de la Región de Murcia, Orquesta de la Universidad Autónoma de Aguascalientes (Mexico), Orquesta de Montecatini Terme (Italia), Camerata Antonio Soler, Camerata Bern, Moscow Symphony Orchestra, etc.

He has been in the context of festivals and musical cycles such as the Festival of Contemporary Music Festival of the XX Century Music of Bilbao, Juan March Foundation Cycles, National Musseum and Arts Center Queen Sofia of Madrid, Spanish National Auditory of Madrid, CIMUCC, Conway Hall Cycles (London), Festival Musicale di Montecatini Terme (Italy), Boccherini Open (Italy), Festival Armonie della Sera, Ancona (Italy), Piano Stravaganza Festival (Bulgaria), Centre ArcA (Luxemburg), Willem II Concertzaal (The Netherlands), Hochschule für Musik und Darstellende Kunst, Mannheim (Germany), Randfestspiele für Neue Musik (Germany), Moscow Conservatory (Russia), Australian National University, Boston Conservatory (USA), Manhattanville College (USA), Miami Dade College (USA), University of North Georgia (USA), Oklahoma State Univesity (USA), University of South Florida (USA), etc.

Most of his works have been recorded and broadcasted by RNE (Spanish National Broadcasting), BNR (Bulgarian National Radio), SR 2 KulturRadio Saarbrücken (Germany) and are published by EMEC (Spanish Contemporary Music Publishing), Musicvall, Juan March Foundation, Piles, Brotons & Mercadal, Edizioni Sconfinarte (Italy), Musica Ferrum (UK), Da Vinci Edition (Japan) and Donemus (Netherlands).

He teaches Harmony, Musical Analysis and Fundamentals of Musical Composition at the Conservatory of Cartagena (Spain) and is the Head of Composition Department.