Since 2006, David Rivas has worked as a secondary school teacher at IES "Cardenal Pardo Tavera" (a position he earned through public examination) in his hometown of Toro. He received his musical education at the conservatories of Valladolid, Zamora and Salamanca.

Working outside the academic sphere, his work in musical composition over the last few years has been very productive and gratifying. Studying under a number of Maestros including Oscar Navarro, Andrés Álvarez and Juan Luis Roig, David has enjoying a growing presence on the national musical panorama. Author of music for musical band, symphonic orchestra, choir, soundtracks for theatre and short films, as well as for the exhibit "Las Edades del Hombre", Rivas has composed more than 100 pieces and garnered numerous composer's prizes, including:

- "Mi nuevo amigo": Second Prize at the Concurso para Banda Joven (Youth Band Contest) 2016 organised by the TMJ of Valencia.

- "Manuel Calzada": First Prize at the Concurso Internacional de Pasodobles (International Pasodoble Contest) 2016 of Benimaclet in Valencia.

- "Llanto por Cristo Muerto": First Prize in 2017 at the Concurso Nacional de Marchas Fúnebres de San Pedro del Pinatar (National Funeral March Contest of San Pedro del Pinatar) in Murcia.

- "Memoria de Gallaecia": First Prize at the 11th Concurso de Composición de la Federación Gallega de Bandas (Galician Federation of Bands Composition Contest), Category Three.

David’s music has premièred in countless theatres and auditoriums and is gaining prominence thanks to his collaboration with many international bands and soloists: Jesús López Cobos, Ainhoa Arteta, Juan Ferrer, Rubén Simeó, OSCyL, Luis Santana, Banda Municipal de Madrid (Municipal Band of Madrid), Banda Municipal de Sevilla (Municipal Band of Seville), David Muñoz, Banda de Infantería de Marina de Madrid (Marine Infantry Band of Madrid), Hercules Brass, Luis Antonio Pedraza, Banda Ciudad de Oviedo (City Band of Oviedo), Evan Feldman, Banda Municipal de Alicante (Municipal Band of Alicante), Antón García Abril, Johan de Meij, Theo Walters, Pascual Vilaplana, Jacob de Haan, Banda Municipal de Bilbao (Municipal Band of Bilbao), Taipei Wind Symphony, Canadian Brass, and others.

His music has crossed our borders and has been performed in countries such as Argentina, Mexico, Portugal, Peru, Greece, Italy, France, England, Germany, Japan, the U.S.A., and Taiwan.

Since 2017, Rivas is the recipient of the Premio de la Fundación Científica Caja Rural (Caja Rural Foundation for Science Prize) in the Excellence in Culture category.