The Bnəi Koraḥ were an important branch of the singers of the Kohathite division (2 Chronicles 20:19). Eleven psalms are attributed to the Korahites: Psalm 42, Psalms 44 - 49, Psalm 84, Psalm 85, Psalm 87, and Psalm 88.
Some of the sons of Korah also were "porters" of the temple (1 Chronicles 9:17-19); one of them was over "things that were made in the pans" (v31), i.e., the baking in pans for the meat-offering (Leviticus 2:5). (via wikipedia)