In November 2021 the highly talented and expressive coloratura soprano made her successful debut as GILDA in the Dessau Theatre. Before, she knew already huge success in this very role at the Cluj-Napoca State Opera. She was ZERLINA in Mozart's »Don Giovanni« at the Graz Music Association within the framework of the Angelika-Prokopp-Summer-Academy 2021.

From 2017 to 2019 the 26-year-old coloratura soprano was engaged at the Bucharest Comic Opera, where she succeeded with the title part of LIVIETTA in Pergolesi' s »Livietta e Traccolo«, as SERPINA in Pergolesi's »La serva padrona«, SANDMAN and DEWMAN in Humperdinck's »Hänsel & Gretel« and Mozart's PAMINA and BASTIENNE. Besides, at the Opera Clandestina Association she had remarkable guest performances as BELINDA in Purcell's »Dido and Aeneas«.

Since 2019 Diane Alexe is a member of the Vienna State Opera, where she already sang such parts as the FEMALE VOICE in Manfred Trojahn's »Orest« or in the soloist quartet in Mozart's »Die Entführung aus dem Serail« .

Diane Alexe grew up in South Moldavia and started her musical education with opera singing at the Bucharest Music University with Eleonora Enachescu and Iulia Isaev. She completed her studies at the Private University for Music and Art in Vienna. While studying, she was a scholarship student of the Royal Princess Margaret of Romania Foundation for 4 years, which enabled her to participate in gala performances at the Radio Hall Bucharest, in the Philharmonic Athenaeum, the Elisabeth Palace and at the Romanian National Theatre. At the Dacian Festival she was elected Best Romanian Female Singer younger than 20.

Diana Alexe is multiple Prize Winner, e.g. of the International Emil Rotundu Competition 2020, the 54th Dvorak Competition 2019, the International Grand Prix of Romania 2019, the 23rd Schneider-Trnavsky Competition 2019, the 18th Ada-Sari-Competition 2019 and the Warsaw Chamber Opera Competition 2019.
For the time being, she is semifinalist at the New Voices Competition Gütersloh.

At the present time, she studies in Vienna with Mario Steller, Akiko Nakajima and Niels Muus.