Zaz is a singer, which I discovered when tried to learn French while doing one of my work gigs. I was amazed by her voice and history, and I wanted to go when I saw she was coming to Prague.
I was surprised by how many people were in the music hall and how many french speaking folks were in Prague. The concert was a blast; she sang the two songs I knew, of course, and she led us through a journey of multiple styles. She has great energy on stage, and I recommend visiting a concert of hers if she is around you.