The Doppler effect plug-in may be a lucrative niche market that has never been thoroughly explored. The Doppler effect is a real world phenomena than can be implemented musically, the same way a pitch shifter or chorus/flangers have in the past. I propose A Doppler Effect ‘effect’ that can be sold and used as a plug-in on various instruments such as electric guitars, synthesizers or even percussive instruments such as congas or shakers. This will be a revolutionary and one of the only dedicated spatial audio plug-ins to the Doppler Effect made in the world. The lack of Doppler plug-ins on the market indicates that there will be little competition and possibly a valuable niche market. A Doppler effect plug in will give customers a creative tool and a unique opportunity to spatially and melodically manipulate their sounds in an unconventional and new way.