born in ashiya city, hyogo prefecture in 1951, his father is the president of the company and is the youngest of three siblings. akamatsu learned the to play a piano from an early age, and when he was in the second year of junior high school, he said, "i want to play jazz," and his mother opposed "that kind of music is bad." however, in the end, he joined hatari's and became a semi-professional at the dance hall "fuji" in osaka at that time. after that, he was invited to join ox.