Heat up these frigid nights with New Orleans native Kermit Ruffins, when he brings his hot horn and his warm Louis Armstrong vocal stylings to the Jazz Standard (116 E. 27th St.; [212] 576-2232) Monday at 7:30 and 9:30 p.m.

Tickets are $15. A fixture on the Big Easy brass-band scene, Ruffins covers the Mississippi waterfront of standards with trumpeted-up jazz renderings of tunes such as “Ain’t Misbehavin'” and “On the Sunny Side of the

Street” on his latest, self-titled disc.