Mizrachi is just a term for Jews who lived in Middle Eastern countries. This is probably a Reform shul, given the name in the video title. It's also potentially kabalat Shabbat, welcoming the upcoming Shabbat, which is when songs like this and Shalom Aleichem etc are sung.
Do you mean musical style - or clothing - or what? "Mizrahim" can include a wide variety of ethnic cultures and sometimes also refers to Sephardic cultures.
although i'm ashkenazi, i like mizrahi worship and culture more :) recently i started doing my everyday shakharit prayer in mizrahi "azaan like" style instead of just this plain ashki mumbling, it's wonderful and it brings me so close to g'd 🤍💙 barukh hashem
