[2] Jarnot has worked with conductors including Ralf Gothoni, Enoch zu Guttenberg, Jesús López-Cobos, Jonathan Nott, Andrew Parrott, Karl Anton Rickenbacher, Ulf Schirmer, Peter Schreier, Pinchas Steinberg, Martin Turnovský, Marcello Viotti, Bruno Weil, and David Willcocks.
Jarnot has sung Aeneas in Dido and Aeneas in a London production, Onegin in Eugene Onegin in Baden-Baden, Yeletzky in Tchaikovsky's The Queen of Spades in Glasgow, Harlequin in Ariadne auf Naxos,[6] Amfortas in Parsifal at Monte Carlo, Guglielmo in Così fan tutte at Savonlinna, Pelléas in Pelléas et Mélisande at Innsbruck, the Narrator in Gerhard Konzelmann's Die Legende von der schönen Lau at Blaubeuren, and Madhavia in Schubert's Sakontala at Urach.
[2][7] In 2006, he appeared as Leporello in Mozart's Don Giovanni, with Thomas Hengelbrock conducting the Balthasar Neumann ensembles at the Feldkirch Festival.
[8] In 2007, Jarnot performed Bach's solo cantatas Kreuzstabkantate and Ich habe genug, BWV 82, with the Münchener Kammerorchester, conducted by Christoph Poppen.
[9] In 2005, Jarnot recorded Lieder of Richard Strauss, including piano arrangements of his Four Last Songs, typically sung by sopranos, with accompanist Helmut Deutsch.