Hanna is a classically trained cellist who grew up in a family of musicians and picked up her first cello at age 3. Throughout her teens, she performed throughout Australia and Europe and continued her studies, completing a Bachelor of Music (B. Mus) majoring in Performance at the Sydney Conservatorium of Music. Throughout her studies, she strived to push the boundaries of her classical training and began to perform and tour with local pop & rock bands. This lead to performances with some of the biggest named artists in the world, such as Ed Sheeran, Josh Groban, Chet Faker and dozens more.

Hanna was a founding member of the classical crossover group 'Aston' which rose to YouTube fame in 2010 with their cover of 'Telephone' by Lady Gaga, which they had the opportunity to play for the star herself when she was in Sydney for Perez Hilton's reality show. This lead to several other hugely successful covers and took their YouTube views to 30 million.

Hanna has also performed, recorded or toured with Ronan Keating, Delta Goodrem, Jess Mauboy, Kylie Minogue, Lior, Rod Stewart, Illy, Phrase, Olly Murs, The Veronicas, Bonobo, Angus and Julia Stone, Patrizio Buanne, Taylor Henderson, Matt Corby, Marina Prior, Human Nature, The Ten Tenors, Tamara Jaber, Emily Haines, The Jezabels, The Broods, Jess Glynne, Reigan Derry, Nathaniel, Something With Numbers, Tea Party, Owl Eyes, Emma Louise, Katie Noonan, Karmin.