As of February 2014, Section.80 sold 130,000 copies domestically. Section.80 received generally positive reviews from critics and debuted at number 113 on the US Billboard 200. The album's lead single, 'HiiiPoWeR' was released on April 12, 2011. The concept album features lyrical themes delivered by Lamar such as the 1980s crack epidemic, racism and medication tolerance. The production was mainly handled by Top Dawg in-house producers from production group Digi+Phonics, along with THC, Tommy Black, Wyldfyer, Terrace Martin and J. The album features guest appearances from GLC, Colin Munroe, Ashtrobot, BJ the Chicago Kid, Schoolboy Q, Ab-Soul and vocals from late singer-songwriter Alori Joh. It was released on July 2, 2011, by Top Dawg Entertainment. Section.80 is the debut studio album by American rapper Kendrick Lamar.