There multiple artists under variations of the name "Amu""
1) (ａｍＵ) A indie electro/technopop unit, formed in 2008, made up of "aco" and "meru", two young women. Described as "happy" and "colorful" on their official website, they perform all over in Japan, in areas such as Nagoya, Tokyo, and Osaka. Being relatively new in the underground electronica scene, they've released three singles so far.
2) A South African rapper. He started rapping Read more on Last.fm