Lunn performed in Monteverdi's L'incoronazione di Poppea, Gluck's operas Orfeo ed Euridice and Alceste, and in Verdi's Falstaff.
Her recordings of Bach cantatas with John Eliot Gardiner and the Monteverdi Choir include Herr, wie du willt, so schicks mit mir, BWV 73, for the Third Sunday after Epiphany.
She recorded Bach's Mass in B minor with both Jürgen Budday and the Maulbronn Chamber Choir, and Marc Minkowski and Les Musiciens du Louvre.
In 2010 she performed the work in St. David's Hall, Cardiff, with Elin Manahan Thomas, Robin Blaze, Toby Spence, Peter Harvey, the BBC National Chorus and Orchestra of Wales, conducted by Thierry Fischer.
[4] Lunn recorded John Rutter's Mass of the Children with the City of London Sinfonia, conducted by the composer, and performed the work both at St Paul's Cathedral and at the Symphony Hall, Birmingham.