Pop is a music genre appreciated by people all around the world since the very 1950s. It is usually repetitive, catchy and either uplifting or about love.
Alternative rock broadly consists of music that differs greatly in terms of its sound, social context and regional roots. Alternative can be a less mainstream or experimental take on any music genre.
Independent music is music produced independently from commercial record labels. It's a do-it-yourself approach to recording and publishing. The term indie is sometimes used to describe a genre such as indie rock and indie pop.
A form of popular music that evolved from rock and roll and pop music during the mid and late 1960s. It was initially characterized by musical experimentation and drug-related or anti-establishment lyrics..
Hip-hop, cultural movement that attained widespread popularity in the 1980s and '90s. This genre incorporates rhythmic and/or rhyming speech and is one of the most influential art forms.