Vassiliki Roussi was born in Athens in 1974. She began her studies at the conservatory of the Piraeus Association with professor Maria Irinaeou. She then studied at the Philippos Nakas Conservatory, where she obtained a Piano degree "Ptychion" with professor Reima Raias, a Piano Diploma with professor Irini Laliotou, a Harmony Degree with professor Josef Papadatos and a Counterpoint Degree with professor Panagiotis Adam. She has taken part in the Panhellenic Competition "O Filon" (Silver medal) and has played the piano on the radio show "Young talents" of the National Greek Radio. She was also a member of the Athens choir under the direction of conductor Giannis Ioannidis and accompanied orchestral instruments in concerts and scholarships.

In order to expand her knowledge in the pedagogical field, she has attended seminars, workshops and Master Classes. She has worked as a teacher in Primary and Secondary education and at the Music High School of Corfu and as a pianist at the ballet school of Eleanna Papakyriakou. Her collaboration with the Philippos Nakas Conservatory began in 2024.