The niggun “Mizmor Shir Leyom Hashabbos” was composed by Reb Sholom Halevi Brochshtat. He relates that he chose to add these words because the Rebbe kocht very much in this posuk and also connected it to Moshiach.
This niggun was sung before the Rebbe on Motzoei Shabbos Breishis 5754. It is the last Yud Alef Nissan niggun that was sung in front of the Rebbe, when the Rebbe was with us b’gashmiyus, as of now.
Let us daven that we be zoche to sing this year’s Yud Alef Nissan niggun together with the Rebbe with the coming of Moshiach now!
Reb Sholom Brochshtat
Davidi bem mas