She worked with the Groupe de Recherches Musicales under the direction of Pierre Schaeffer (1963-70) where she collaborated on the realisation of the Solfège de L’objet Sonore albums. While there she completed research and ran the interdisciplinary seminars. In 1975, Ferreyra joined the Composers College of the IMEB (Institut international de musique électroacoustique de Bourges) and later created the experimental concerts series ‘Les rendez-vous de la Musique concrète’ at the Centre d’études et de Recherche Pierre Schaeffer. Ferreyra has performed at many international festivals, electroacoustic conferences and music seminars. As an independent composer, she has received commissions for performance at festivals and concerts, as well as public celebrations and events, films and ballets. Beatriz Ferreyra has also worked in the area of music therapy and served on numerous juries for international competitions adjudicating experimental musics.