This event is in the past.It took place on May 10, 2026 at Parc de la Grève - Rue Lancelot.








Four days of acoustic brass battles on the banks of the Loire. 800 musicians from amateur fanfares take over Trentemoult with pop, Balkan, and New Orleans sounds — all unamplified, all free, gloriously loud.
Amateur musicians
Riverside setting
Family-friendly
Unamplified sound
Tips
📢"À ne pas manquer !" (OUSTE ON SORT)
🎺catch the street battles between stages
🍺bars and food on-site all weekend
Les Fanfaronnades








Four days of acoustic brass battles on the banks of the Loire. 800 musicians from amateur fanfares take over Trentemoult with pop, Balkan, and New Orleans sounds — all unamplified, all free, gloriously loud.
Amateur musicians
Riverside setting
Family-friendly
Unamplified sound
Tips
📢"À ne pas manquer !" (OUSTE ON SORT)
🎺catch the street battles between stages
🍺bars and food on-site all weekend
Make it an outing
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