Leilani has recently completed a Masters in Performance at the Royal College of Music, where she studied with Sally Burgess as a Draper's Company Scholar supported by a Draper's Company Scholarship. Previously, she completed a Postgraduate Diploma and passed with Distinction, and graduated with a First Class Honours Degree in Music from Royal Holloway College in 2015, where she was a choral scholar for three years and was awarded the Dame Felicity Lott Bursary.
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In competitions, she has received First Prize in The Courtney Kenny Award English Song Competition (2016) and was commended for her “appealingly rich sound” and “well chosen and heart-wrenching” programme of English Song. She was described as “highly musical and intelligent” when awarded a Commendation in the RCM Lieder Competition (2017), adjudicated by tenor Nicky Spence, and was 'Highly Commended' in The Mozart Singing Competition (2018), adjudicated by Audrey Hyland and Barbara Dix. An accomplished performer of Lieder, Leilani has been involved in a project which explored the forgotten music of German composer Robert Kahn, and has since performed his music at The Liberal Jewish Synagogue as part of the lecture series ‘Love of Lieder’, the German Embassy in London and The Akademie der Künste in Berlin. She was also 2019 Leeds Lieder Young Artist and performed in live streamed masterclasses lead by Angelika Kirchschlager and Malcolm Martineau.

Leilani's solo operatic roles include Nora (Riders to the Sea) with Midsummer Opera, Hansel (Hansel and Gretel) with Diva Opera and Cherubino (Le nozze di Figaro) with Opera Alegria. In RCM Opera Scenes she has performed the roles of Susanna (Figaro), Dorinda (Orlando), Mary Crawford (Mansfield Park), Laola (L'étoile), Pinocchio (The Adventures of Pinocchio), Rosina (Il barbiere di Siviglia) and Hélène (Une éducation manquée). Leilani sings regularly with Opera Holland Park Chorus and has most recently performed a silent acting role as the title character 'L'arlesiana' in Cilea L'arlesiana (directed by Oliver Platt and conducted by Dane Lam).

Leilani is also a keen performer of lighter music, cabaret and jazz and performs programmes of music by Cole Porter, Jermome Kern and George Gershwin at private venues with jazz pianist Neal Thornton.

Leilani has been generously supported by the Arthur Souster Charitable Trust and The Aspinwall Educational Trust.