Underground hip hop

Underground hip hop, underground rap, or undie (to draw comparison to "indie" or independent rock) is music made by hip-hop artists not signed to major record labels, and with "little regard for mainstream conventions".
See more at Wikipedia.org...

Alternative hip hop (also known as alternative rap) is a genre that is defined in greatly varying ways.  All Music Guide defines it as follows: Alternative Rap refers to hip-hop groups that refuse to conform to any of the traditional stereotypes of rap, such as gangsta, funk, bass, hardcore, and party rap. Instead, they blur genres, drawing equally from funk and pop/rock, as well as jazz, soul, reggae, and even folk.
See more at Wikipedia.org...