Mateo Soto was born on 1972 in Cartagena (Spain), where he starts his studies of viola and piano. 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's winner of the “Sound-Magical-Space – S.M.S.” 2018 promoted by Patricia Kopatchinskaja and the 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, Anné-Marie Condacse, Kristin Leitterman, Paolo Carlini, Frano Kakarigi, Manuel Miján, Jesús Villa Rojo, José María Santandreu, Trío Mompou, Trio Bacarisse, Quartetto Bernini, Quatuor Tana, Spanish Brass Luur Metalls, Concertus Novo, Grupo LIM, Columbus Ohio Discovery Ensemble, London Chamber Group, Orquesta Sinfónica de Cartagena, Orquesta de Jóvenes de la Región de Murcia, Orquesta de la Universidad Autónoma de Aguascalientes (México), Orquesta de Montecatini Terme (Italia), Camerata Bern, Moscow Symphony Orchestra, etc.

He has been in the context of festivals and musical cycles such as the Festival of Contemporary Music “Mayo Musical” of Murcia, Festival of the XX Century Music of Bilbao, International Music Festival of Castilla La Mancha, Juan March Foundation Cycles, National Musseum and Arts Center Queen Sofia of Madrid, “Ciclo de Cámara y Polifonía” of Spanish National Auditory of Madrid, International Festival of Young Orchestras of Murcia, 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), 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 broadcast 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 Fundamentals of Musical Composition at the Conservatory of Cartagena and is the Head of Composition Department.