With the support of:

Sigma Project Quartet

Telephone: (+34) 660 299 645 | (+34) 678 526 492



Facebook: @sigmaproject

Twitter: @sigma_project


Instagram: @sigmaproject

Soundcloud: sigmaproject

Artistic Direction: SIGMA Project

Year of foundation: 2008

Members: Alberto Chaves, Andrés Gomis, Josetxo Silguero, Ángel Soria

Production: Coro Bonsón

‘Is it really necessary to present Sigma Project in 2017?

 The incredible amount of concerts it has given –mainly in Europe and Latin America- during its decade of life, the volume of works entrusted during said period, and the participation in six discographic productions guarantees its notable role as one of the most active Spanish groups, as ambassadors of music of recent creation’

José Luis Besada, musicólogo | musicologist

(Universidad de Estrasburgo / IRCAM, abril, 2017)

2008-2018: Tenth Anniversary of SIGMA Project | An Instrument for Creation

The excellence of SIGMA Project in the field of musical performance has been recognised by the Fundación BBVA in 2018, on being awarded the prestigious Leonardo Scholarship to Music Researchers and Creators.  

The clear modularity of Sigma Project covers from the homogeneity of the group of four equal instruments to its maximum instrumental diversity, a quality very appreciated in current compositional tendencies. From its concerts, one leaves convinced of having attended a true experience for the senses, where sensations never perceived before, flourish, namely the acoustic space, the visual liturgy and that sound showing itself to be authentic.

Its components feel like imaginative explorers, able to stimulate composers that approach its sound, generating a new grammar in a true sound laboratory, like the projects developed with the National Music Awards, Alberto Posadas (Poetic Labyrinth Series), José María Sánchez-Verdú (KHÔRA Series), José Manuel López López, Jesús Torres, among others, a dynamic that has supposed until now more than 60 first performances completed.

In the recording field, SIGMA Project has its own label, Sigmarecords, publishing the disc ‘UTOPÍAS: New Music for Saxophone Quartet’ and the DVD ‘La Música para Saxofón de Félix Ibarrondo’. Likewise, it records for the Fundación BBVA (monographs José Manuel López López and Gerardo Gombau), Orpheus Classical (monograph Mª Eugenia Luc), Casa Velázquez-Académie of France in Madrid (monograph Víctor Ibarra) and by invitation of the German Ernst von Siemens Music Foundation, with the label Col Legno, the monograph Simone Movio.

During 2018, SIGMA Project is found touring internationally on its tenth anniversary, presenting world premieres of the composers José María Sánchez-Verdú, Alberto Bernal, Alberto Carretero, Ricardo Climent (Spain), Fabián Panisello (Argentina), José Luis Hurtado and Sergio Luque (México), Wieland Hoban (Germany), Luis Miguel Delgado (Colombia) in its concerts by the auditoriums of Córdoba, Madrid, Valencia, Bilbao, San Sebastián, Palma de Mallorca, as well as in Ciudad de México (Palacio de Bellas Artes), Bogotá (Teatro Mayor), Buenos Aires (Teatro San Martín), Kingston (Jamaica) and Tunisia.

Sigma Project develops its activity with the support of the Instituto Nacional de las Artes Escénicas y de la Música, the Instituto Etxepare of the Basque Government and the German Ernst Von Siemens Musikstiftung.

SIGMA Project en la Fundación BBVA de Bilbao (abril 2017)