Concert· Erfurt
Sigma Project Quartet
I'm not familiar with a specific event called "Sigma Project Quartet," so I can't give you a reliable summary without risking making up details. If you can share a flyer, program, or description (e.g., is it a chamber music concert, and are the performers classical musicians?), I'd be happy to write the summary for you. For what it's worth, Sigma Project is a Spanish classical music foundation kno