Une Touche D'Optimisme, also known as UTDO, is a French chanson group from Juvignac near Montpellier. Formed in autumn 2004 by Evan Braci and Clément Guy, the group's first album, Quelques grammes de bonheur, was released in 2007. They followed this with En avant pour demain (2010) and Le dernier des grands rois (2013). They have performed over 900 concerts and released five studio albums, with their fifth, D’aussi loin que je me souvienne, self-released in 2021. Despite the COVID-19 pandemic, they maintained an active schedule, including fifteen concerts in 2020. The group has shared the stage with notable artists like La Rue Ketanou and Sinsemilia.