What makes 51 by Kool A.D. notable?

'51' received attention for its unconventional approach to hip-hop, emphasizing creativity over commercial appeal. The mixtape is often cited as influential within the alternative rap scene, helping to pave the way for artists who prioritize individuality and lyrical depth over mainstream trends. By the time Kool A.D. released '51' in January 2012, he was a key member of the alternative hip-hop collective Das Racist, known for their unique blend of humor and social commentary. This mixtape marked his first solo project after the group gained notoriety with their breakthrough track 'Combination Pizza Hut and Taco Bell' in 2008, showcasing his artistic evolution and willingness to experiment outside group dynamics.