L’shanah tovah! A little before the fact, maybe, but Rosh Hashanah, the Jewish New Year, begins at sunset.

This Sunday night on “The Lost Chord,” we mark the High Holy Days, which encompass the observance of Rosh Hashanah and Yom Kippur – the Day of Atonement – with two complementary works.

Jacob Weinberg’s String Quartet, Op. 55, of 1950, falls into three movements: “Rosh Hashana,” “Yom Kippur” and “Sukkot.” “Yom Kippur” is based on the familiar melody of the cantorial chant “Kol Nidre.” (You know, the one used by Max Bruch.)

Ernest Bloch’s “Israel Symphony,” composed between 1912 and 1917, is more like an orchestral rhapsody, with its three sections – “Prayer in the Desert,” “Yom Kippur” and “Succoth” – played continuously and capped by parts for vocal soloists.

Sukkot, which begins shortly after Yom Kippur, is the harvest festival which commemorates the period following the Exodus, when the Jews erected temporary dwellings, or sukkot, during their wanderings in the desert.

The High Holy Days are a time of reflection, ten days of awe and repentance. I hope you’ll join me for “Totally Awesome,” tonight at 10 ET, with a repeat Wednesday evening at 6; or that you’ll listen to it later as a webcast at wwfm.org.