I haven’t heard that about rappers but i know that a lot of dopeboyz do it…supossedly if they sell their souls to the devil then he will protect them from being locked up…i don’t know it’s really crazy. One time I knew this guy that stayed at this house with a bunch of ppl and this old black man used to come and do some kind of voodoo if you wanted to sell your soul to the devil…sounds scary to me