A Psalm
mizmowr (miz-more')
instrumental music; by implication, a poem set to notes -- psalm.
or Song
shiyr (sheer)
a song; abstractly, singing -- musical(-ick), sing(-er, -ing), song.
for the sons
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.
of Korah
Qorach (ko'rakh)
ice; Korach, the name of two Edomites and three Israelites -- Korah.
His foundation
ycuwdah, (yes-oo-daw')
a foundation -- foundation.
is in the holy
qodesh (ko'-desh)
a sacred place or thing; rarely abstract, sanctity -- consecrated (thing), dedicated (thing), hallowed (thing), holiness, (most) holy (day, portion, thing), saint, sanctuary.
mountains
harar (haw-rawr')
a mountain -- hill, mount(-ain).