Hiroko Taniyama is seen as a category of artists of New Music series
and is popular with fans of New Music, but on the other hand,
it is sometimes said to have progressive rock-like elements.
The fantasy nature and musicality of the lyrics overlap with the category of progressive rock.
It is said to be listened to with images overlapping with Kate Bush, Loreena McKennitt
and Ryoko Moriyama which have similar musicality and are drawing attention from fans of progressive rock.
However, composition such as general progres, including the irregular beats
and arranging to show off sophisticated performances are not frequently used.
She began bringing songs to King Records during junior high school and "僕たちの秘密" was
adopted on the B-side of the single "白い天使" (released November 20, 1970)
of Baby Brothers (later Finger 5) when she was 14 years old.
Originally she is a composer aspiration, she did not expect to sing.
But the director of King Records told her. "If you sing by yourself we will release your LP"
And recording was done in a style she sings while playing the piano.
And on April 25, 1972, King records released her first album "静かでいいな 〜谷山浩子15の世界〜"
and her first single "銀河系はやっぱりまわってる"
That year, she became regular of NHK 101 stage (TV program for young people)
In 1974, her "お早ようございますの帽子屋さん" was selected at the 7th popular song contest,
and on February 10, 1975 Canyon Records released her second debut single.
And in 1977, she officially debuted as a single "河のほとりに".
She says "There are my three debuts."