Alistair Zaldua is a composer of contemporary, experimental, and improvised music and has written work for chamber, orchestral, solo forces and live electronics and is based in Manchester, UK. His work has received performances from highly acclaimed ensembles and performers such as: ensemble surplus, Ensemble Aventure, Ensemble Modern, Composers Slide Quartet, and Ian Pace, Mark Knoop, Jonathan Powell,  Rei Nakamura, Adam Linson, Lauren Redhead. Most recently, his work has focused on collaboration and improvisation with a range of musicians and artists from musical and other backgrounds.  He currently performs work for organ and live electronics in duet with Lauren Redhead, and violin as part of Trio CZW, which is an improvisation trio with Paul Cheneour (flutes) and Maureen Wolloshin (oboes). 

In 2019, Duo Redhead-Zaldua received funding from the Hinrichsen Foundation, Goldsmiths Innovation, Creativity and Experience Research Unit and the Pro Helvetia Foundation (Switzerland) to enable collaborative work with composers Ailís ní Ríain (IE), Nina Whiteman (GB), and Annette Schmucki (CH). In 2020 this programme has been performed at the Ideas of Noise Festival (Birmingham), and the Electric Spring Festival (Huddersfield). His work as a performer of violin and electronics also features on the collaborative album hearmleoþ-gieddunga (Chicago: pan y rosas discos, 2018) with Lauren Redhead. As a result of the critical success of this album Duo Redhead-Zaldua were invited to perform at the KontraKlang concert series in Berlin (2018), the nyMusikk Only Connect Festival in Stavanger, Norway (2019) and at the Tectonics Festival in Glasgow in May 2021.

In 2021 he received a Develop Your Creative Practice (DYCP) grant from Arts Council England to develop his improvisation on the e-violin and live electronics, with Alwynne Pritchard as his mentor. He has performed as an improviser in with Sam Bailey, Franziska Baumann, Steve Noble, and with Alwynne Pritchard in Bergen, Norway (June) as artist in residence at the Neither/Nor residency space in June 2022. He organises The Noise Upstairs concerts series in Withington, Manchester together with Mike Tyldesley, Andrew Rothwell and James Coote.

International and festival performances: Göteborg Art Sounds (2016), SuperNormal (2016), Alchemy Film and Moving Image (2015), Huddersfield Festival (2014), Sampler Series Barcelona (2014), Borealis (Bergen, Norway, 2014), Leeds New Music Festival (2013),REM (Bremen, 2011), UsineSonore (Malleray-Bevilard, Switzerland, 2012), Música Nova (Sao Paolo, 2006), Quantensprünge ZKM (Karlsruhe, 2007 & 2008), amongst others.