In computer music plastic sound objects have increasingly appeared in different sound projection techniques over the last 60 years. The icosahedral loudspeaker (IKO by IEM and sonible), a research and development result of the IEM Graz together with the company sonible, is the first compact 3rd order Ambisonics based sound emitter. Thus, the IKO is capable of three-dimensional beam forming and can be used as a portable musical instrument for composing sound sculptures. The artistic results of this approach considerably differ from those using multichannel loudspeaker setups. This workshop demonstrates the deployed beam forming and sound sculpture composition techniques as well as the vIKO and headtracking as compositional tools in the process of 3D electroacoustic composition.