Okay, so Ashkenaz is a place where people go to hear music and dance. It's kind of like a big room with a stage on one end where musicians play their instruments and sing songs.
But Ashkenaz is special because it mainly has music from a group of people called Ashkenazi Jews. These are people who come from a certain part of Europe and have their own unique style of music.
You might hear instruments like the fiddle, accordion, and mandolin, and sometimes people sing in a language called Yiddish.
It's a really fun and lively place where people come together to enjoy music and have a good time!