Sonoko Inoue (井上苑子) (born December 11th, 1997 in Hyogo, Japan) is a Japanese singer songwriter. She took an interest in music at an early age, influenced by her mother who is an accomplished voice-training instructor. In sixth grade, she started learning the guitar and began writing songs on her own. In 2010, she self produced a CD and began performing lives on the street. During the same year, she held a one-man live during her graduation from elementary school. In 2013, at the tender age of 13, she debuted with the single "Sorairo Blue" under the LITTLE BIRD RECORDS.