I am a professional rapper and I do it for a living, its fun, What would you like to know about it? 
What are the origins of rap?
Rap started the same time that Hip hop did, It developed in the Bronx in New York City during the late 1970s.
Do you rap acapella?
I do sometimes, But I like a good rhythm to go along with my words so I can keep on tempo with everything. 
Is rapping considered a form of poetry?
Well Rap usually differs from spoken-word poetry,  rap is usually more performed in time to a track of music..
I see. Who are some of your favorite rappers? The only one i'm familiar with is Tupac.
retail release, "Overly Dedicated". The following year, he independently released his first studio album, "Section.80", which included his debut single, "HiiiPoWeR". By that time, he had amassed a large online following and collaborated with several prominent hip hop artists, including The Game, Busta Rhymes, and Snoop Dogg.
Lamar's major label debut album, "Good Kid, M.A.A.D City", was released in 2012 by TDE, Aftermath, and Interscope Records to critical acclaim. It debuted at
Power Peace". 
In his 1986 autobiography, Brown related the lyrical message of "Brother Rapp" to his support of hip hop music:
I admire the rap and the break dancing and all the stuff coming out of hip hop. A lot of the records are messages that express community problems. Used right, those records could help prevent the riots of the sixties from happening again. If you know how a community feels about things, then you can do something about it... That's what my song "