"Sad Happy" was written and produced in full by Kieran Shudall, and mixed by Grammy winners Dan Grech-Marguerat and Matt Wiggins. In a day and age when the barriers to releasing music have been well and truly torn down, the prolific nature of Kierans' writing, coupled with Circa Waves' relentless appetite for playing live and their own label imprint, are cementing the Liverpool four piece's reputation as one of the UK's most dynamic and exciting bands.