Awesome card by Pauline Butcher.
The background was created with Distress Inks, and the soundwave was heat embossed with a Wow gold sparkle embossing powder. All the black stamping was done using Versafine ink, and the skull was stamped using a Kaleidoscope Ink Pad. Pauline also used some gilding wax around the edges. Everything was fussy cut and added to the background with 3D gel, for extra dimension!