Emulsion IV took the form of a residency at Cheltenham Music Festival 2015.

The Emulsion Quartet (Trish Clowes- saxes, Lauren Weavers – oboe, Calum Gourlay – bass and Donald Grant – violin) worked with emerging composers over 4 days including workshops and performances.

In the middle of the event, the Emulsion Sinfonietta – with special guests FOOD – performed at the Parabola Arts Centre, presenting music from Iain Ballamy, Luke Styles, Trish Clowes, Calum Gourlay and two new works by Joe Cutler and Thomas Strønen.