Yismechu B’Malchutecha (ישמחו במלכותך) is a Shabbat song traditionally associated with Rabbi Yechezkel Shraga Halberstam of Shinova, the 19th-century Hasidic rabbi known for his Divrei Yechezkel. He was the founder of the Shinova dynasty and eldest son of Rabbi Chaim Halberstam of Sanz.

According to the tradition preserved with this melody, the Rabbi of Shinova would sing Yismechu B’Malchutecha every Sabbath during the repetition of the Musaf, the additional Shabbat prayer service. The melody was carried forward by his descendants and disciples and became part of the musical traditions of communities including Munkatch and Pshevorsk, where it continues to be sung.

The melody also traveled far beyond its original setting. Different Jewish communities adapted it to other Sabbath hymns and prayers, including Eshet Chayil, Menucha V’Simcha, and Lecha Ezbach Zevach Todah, showing how a single melody could move between communities while retaining its devotional character.

A remarkable Hasidic tradition relates that after briefly falling asleep before Musaf, Rabbi Yechezkel Shraga returned to the synagogue and sang this melody. When asked where the new tune came from, he reportedly said that during his sleep he had heard it from the ministering angels.

For listeners of any background, Yismechu offers a window into the sacred music of Eastern European Jewish life and the way melodies were transmitted from teacher to student and from one community to another across generations.

Hebrew: ישמחו במלכותך
Tradition: Shinova / שינאווא
Associated with: Rabbi Yechezkel Shraga Halberstam / רבי יחזקאל שרגא הלברשטאם
Genre: Shabbat song, Jewish sacred music, Hasidic niggun