Andrew Robert Nielsen (born October 6 1982) is an American rapper, known by his stage name MC Lars. He is the self-proclaimed originator of "post-punk laptop rap". He has collaborated with many different artists, including Non-Phixion's Ill Bill and nerdcore rapper MC Chris, and was one of the first underground rappers to sample and reference post-punk and emo bands.

In 2006, he released the single "Download This Song" with it entering the Australian Singles Chart at number 29.

MC Lars, real name Andrew Nielsen, (born October 6, 1982 in Berkeley, California) is an American rapper. He is the self-proclaimed originator of “post-punk laptop rap”. He has recorded for Truck Records in the UK and his Laptop EP is licenced to Sidecho Records in the USA. He was formerly known as MC Lars Horris but changed his pseudonym to MC Lars in 2004 for the sake of