In conclusion, a beat maker is someone who creates a portion of the layers needed to create a final product. The beat maker will create these layers and then sell them to a music producer. At times, the beat maker will lease their layers to various music producers, but if those layers are purchased, whoever purchases them owns full rights to use those layers for the final product, and the layers no longer belong to the beat maker.
The music producer then takes these layers, and adds more layers (vocals, additional instruments, additional sounds, etc.). Once the music producer finishes adding the additional layers, they produce the final product, or song, to be released to the public.