Praise: Just a couple I've found myself singing lately, for whatever reason:
"My Jesus, I Love Thee" (circa 1861)
"The Ninety and Nine"
"Peace in the Valley" (particularly when I'm tired or stressed out)
I was glad to see at least one previous vote for "Angel Band" from the late 1850's (Titled "The Land of Beulah" in one old Hymn book); I play & sing that when I've about "had it" - often right before I go to bed. Which is about now. Peace.