Koumioti was born in the Nea Ionia district of Athens.

Koumioti was one of the foremost representatives of the Greek New Wave genre.

[citation needed] Her breakthrough came while singing at the Apanemia musical club in Athens in 1968, when she was heard by Lefteris Papadopoulos who then asked her to sing with Giannis Poulopoulos for the Dromos (Greek: Ο δρόμος, "The road") album.

Koumioti died on 3 April 2023, at age 81, due to complications of dementia.

[4] (includes third party albums and collections)[5] Koumioti played several roles in film and television, including in the feature films Μια τρελή, τρελή σαραντάρα, H Θεία μου η χίπισσα along with Rena Vlachopoulou, and on television in the Greek series Dyo Xenoi (Δύο Ξένοι) where she briefly played herself.