Liminal is a partnership between architect Frances Crow and sound artist and composer David Prior. They began working together in 1996 but formalized their working partnership in 2003. Their work together focuses on exploring the relationship between sound and the environment and encompasses site specific installations and sound walks, gallery installations, performances, research and consultancy as well as sound design for exhibitions. Liminal acted as lead artists on the Warwick Bar development in Birmingham’s East side and Lead Artists for the Cotswold Water Park 20 year strategic plan. Liminal were headed up the sound design for the award winning Churchill Museum and have contributed to sound designs to a number of exhibitions in the UK and America. Their 2007 sound walk Black Water Brown Water for the canal basins in Stourport, has subsequently been remixed for 8-channel concert diffusion and broadcast more than 20 times around the world. In 2008, liminal coordinated the research project Tranquility is a State of Mind, in partnership with Sustrans – The sustainable transport charity and funded by The Wellcome Trust. The project brought together a cognitive neuroscientist, a clinical audiologist and two acousticians to explore the relationship between sound, health and the environment. Leading directly out of this research came liminal’s proposal for The Organ of Corti, which won the 2010 PRS Foundation New Music Award.