Leah is an award-winning writer and broadcaster. Her first book Quartet: How Four Women Challenged the Musical World won the Royal Philharmonic Storytelling Award 2024, a Presto Music Books of the Year Award 2023, and was shortlisted for the Slightly Foxed Best First Biography 2023. Unsung: Women Musicians of the Second World War publishes in 2027, and received a 2024 Whiting Creative Non-Fiction Grant.

Winner of the 2015 Observer/Anthony Burgess Prize for Arts Journalism, Leah’s journalism has appeared in outlets including the Guardian, ​Financial Times, Observer, New Statesman, Daily Telegraph, London Review of Books, Prospect, BBC Music Magazine, Literary Review, London Magazine, Opera Now, VAN Magazine, Bachtrack, Huffington Post, and The Conversation. Leah has written articles and programme notes for Glyndebourne, the London Symphony Orchestra, London Chamber Orchestra, Longborough Festival Opera, Houston Grand Opera, the Wigmore Hall, Oxford Lieder Festival, Birmingham Symphony Hall, and the Elgar Festival among others.

Leah was selected as a BBC/AHRC New Generation Thinker in 2016, so is frequently on air discussing music and history. As a public speaker, Leah has appeared at events and venues including the BBC Proms, Hay Festival, Edinburgh International Book Festival, Charleston Literary Festival, Buxton International Festival, Harrogate International Festivals, Elgar Festival, Oxford Lieder Festival, Charleston Literary Festival, Seamus Heaney Home Place, Snape Maltings, Being Human Festival, Shakespeare Birthplace Trust, and Free Thinking Festival.

Leah is a Fellow of the Royal Historical Society, and has writing published in peer-reviewed journals including the Journal of the Royal Musical Association, Music & Letters, TEMPO, and Music and the Moving Image, as well as in edited volumes for Oxford University Press, Cambridge University Press, Routledge, and Boydell & Brewer. For 2025, she was a judge for the Women’s Prize for Non-Fiction.