June 21st every year Paris goes absolutely crazy with music! Every street corner, park, and metro station has live performances from classical to electronic to street musicians. All completely free!

The whole city becomes one giant festival. Bars and cafés stay open late, people bring wine to outdoor concerts, and even the metro musicians step up their game. It's like the entire city has a party!

Download the official app to see scheduled performances, but the best stuff happens spontaneously. Just wander around and follow the crowds. Avoid driving that day - streets get closed randomly for impromptu concerts.