The song "Count On Me" by Bruno Mars is about friendship and being there for friends in their times of need. The singer promises that if a friend is lost at sea or in the dark, he will sail the world or be a light to guide them. He says friends can count on each other through good and bad, and will always have a shoulder to cry on or someone to sing beside them if they can't sleep. The chorus reinforces that friends are supposed to count on each other no matter what challenges they face.