Reply To: Anim Zemirot and Shabbtai Tzvi

I mentioned Ho’aderes Veho’emuno. Chassidim, based on the AriZal’s instructions, say it every Shabbos and yomtov, and some also on chol hamoed. Some (such as Chabad) treat it so casually that they sing it at random occasions just like any other nigun. Yet minhag Ashkenaz is to treat it as so holy that it is to be said only on Yom Kippur; certainly, in this view, it would be wrong to sing it casually. Nahara nahara upashtei.