Noun
the cheerful feeling you have when nothing is troubling you
Source: WordNetSinging provides a true sense of lightheartedness. If I sing when I am alone, I feel wonderful. It's freedom. Andrea Bocelli
This irreverent mystery exhibits a droll sense of humor at even the most tense moments, and Landon is up to the challenge, balancing the lightheartedness and drama to deftly convey the characters' conflicting emotions. Source: Internet
They range from the merely melancholy to the truly macabre, with very little of the lightheartedness or uplifting themes that his movies often have. Source: Internet