Acclaimed for the “intimate beauty [of her playing] with which she charmed” the audience (Dresdner Neueste Nachrichten), Adela Bratu received her first violin lesson at the age of six. Soon after she achieved success in various national and international competitions, including the W.A. Mozart Competition, Garabet Avachian Competition, National Music Olympics and others. At the age of 13, she made her solo debut with her hometown orchestra, the Paul Constantinescu Philharmonic. Subsequently, she regularly appeared with orchestras such as the Concertino Ensemble, Silvestri Camerata and Târgovişte Philharmonic. 

In 2008, Bratu began her undergraduate studies at the National University of Music Bucharest with Prof. Octavian Ratiu. In 2012, she continued her studies with Prof. Petru Munteanu at the Rostock University of Music and Drama. After graduating, masterclasses with professors Krzysztof Wegrzyn, Pavel Vernikov and Svetlana Makarova contributed to her musical development.

As a chamber musician Bratu has collaborated with Elisabeth Leonskaja, Andrei Ionițǎ, Andrej Bielow and Diana Ketler, among others. She has performed at festivals including the George Enescu Festival, BBC Proms, SoNoRo Festival and Pärnu Music Festival and others, both as a chamber musician and an orchestra player.

Bratu appeared as a guest player with Staatskapelle Dresden, Scottish Chamber Orchestra, NDR Elbphilharmonie Orchestra, Frankfurt Radio Symphony, Estonian Festival Orchestra, Royal Scottish National Orchestra, Gran Teatre del Liceu Barcelona and others.

In 2015, Bratu joined the Dresden Philharmonic as the assistant concertmaster in the second violins.