[1] The group consisted of Saowaluk Leelaboot, Patcharida Wattana, and Orawan Yenpoonsuk then contract on record label Rod fai don tri.

In 1981 Raya, the founder of Rod fai don tri (Music Train) tried to find girl groups for the label so he asked the singer trainer's school for find their singers but the school couldn't find any girl singers but the school introduced Chantana's daughter (Amp Saowaluk) and niece (Pum Orawan) and Suda Chunbarn's daughter (Mam Patcharida) for Music Train's girlgroup.

In same year they made second foreign language album "Together" but unsuccessful too.

In 1990 they decided to end Sao Sao Sao because of higher education and ages so they made their last album "Dok Mai Khong Nam Jai" a song (Dokmai khong namjai) is bilingual language (Thai-Japanese).

Mam and Pum became RS's singer trainer but cancelled for their own business.