The Louisiana Philharmonic Orchestra will mark All Saints Day with a concert of Pyotr Ilyich Tchaikovsky's Symphony No. 6 in B Minor, "Pathetique," at a very saintly location—the First Baptist Church of New Orleans—with guest conductor Markus Huber at the dais. Also on the program will be performances of the Prelude and "Liebestod" from Wagner's Tristan und Isolde, and "The Isle of the Dead," op. 29 by Rachmaninov. 7:30 pm at 5290 Canal Boulevard. $20-$99. (504) 523-6530 or lpomusic.com.