With family roots in Milos island, Irini Bilini Moraiti was born and raised in Athens, her current base today. She studied musicology at the department of Music Studies of the National Kapodistrian University of Athens, piano and music theory at the municipal conservatory of Moschato.  She holds a diploma in violin (Alexander Mato class) and in monody (Christina Giannakopoulou class) from the Atheneum Conservatory.  She graduated the 3 year course of the Center for Early Music of the Athens Conservatory under the tutoring of Ares Christofellis and Dimitris Kountouras. 

Her vocal repertoire expands from medieval to contemporary music. She collaborates with the early music ensembles Latinitas Nostra (direction of Markellos Chryssikos), Ex Silentio and ensemble of the Center for Early Music (direction of Dimitris Kountouras) and she has participated in projects, opera productions and concerts of institutions such as the Greek National Opera, Bayreuth Baroque Opera, the Athens Concert Hall, the Greek National Radio, the Municipal Partas Theatre, the Athens and Epidaurus Festival and others. During the Music Week of Lefkada 2016 and 2017 she performed as Susanna (Nozze di Figaro, Mozart) and Monica (Medium, Menotti).

She had been a member of the Athens Youth Symphonic Orchestra, the Greek-Turkish Youth Orchestra. Her collaboration with the musician Apollo Retsos, led her to concerts,  theatre and dance performances (The Athens Concert Hall, Athens and Epidaurus Festival, Tanec Praha Festival, Greek National Theatre, Palace Theatre, Roes Theatre).

She plays medieval fiddle and saz. In 2022, together with Athanasia Teliou, she founded the Lycebettus ensemble, an ensemble that focuses on medieval music. She has participated at the workshop of Vocal Research of Spyros Sakkas (Athens, 2021-22) and the Anatolia Vocal Music workshop of Veka Aler (Choudetsi, July 2023). Along with her artistic activities she is deeply interested in the research and cultivation of vocal agogic and art from a broad and intertemporal perspective.