Light reflections disrupt the sound
This audibly affects the reproduction. The sound loses its clarity and transparency. The beam diffusion cannot be avoided by error correction.
A hot tip in audio expert circles is the colouring of the CD's edge with a felt pen, to absorb the light scatter.
The effect unfortunately doesn't deliver on its promise. Green as a complimentary colour to the red laser should bring better results, this is however often not the case as many lasers work with the infra-red spectrum.
Simple and effective: the 36° bevel