Fashion and music have had a close mutual relationship since time immemorial. The Soundable Fashion project aims to raise the relationship between these two disciplines to a new level. The starting point for the development work involved was the catwalk situation. With the object of making the music into an integral component of an article of clothing, a jacket was created which simultaneously functions as a music controller. It consists of a matrix of 52 textile sensors, which on being pressed send a signal via Bluetooth to a computer. The sensors have individual loops, notes, effects or filters assigned to them. From the signals it receives, the computer generates musical sequences. By contrast with classic fashion creations, here the form is subordinated to the function. All the same it proved possible to find an aesthetically appealing design for the functional electronic inner workings of the jacket.