Reflections on Process in Sound is an online journal exploring process in sound art practice from artists' perspectives. Issue 4 features Chris Weaver exploring the development of Variations for Rooms and a Tone during a residency in Dubai; Catherine Clover presents her expanded species- bridging approach to language; Postcards from the Volcano chart the inception and main strands of their project; David Mollin and Salomé Voegelin present Writers' habits in which they lay out their writing process; Magz Hall introduces Tree Radio, an installation at Yorkshire Sculpture Park.