The song "Lonely Heart" by UFO tells the story of a woman named Sarah who has dreams and aspirations. She wants a little bit of happiness and fulfillment in her life. In the quiet moments of the night, she seeks solace and makes herself feel better. She longs for success and something more in life. Sarah's heart beats with youthful enthusiasm and she seeks love and excitement through secret rendezvous. However, her desires and choices lead her down a dangerous path on the wild side. The lyrics suggest that Sarah gets caught up in a world of rock 'n' roll, one-night stands, and empty promises, betraying herself and others. The song describes the consequences of Sarah's actions. She finds herself alone and crying herself to sleep. The promises she made and the love she destroyed haunt her. The lyrics imply that Sarah's choices have left her feeling lost and wondering where it all went wrong. Overall, "Lonely Heart" conveys a cautionary tale about seeking fulfillment and success in the wrong places. It emphasizes the importance of making responsible choices and not giving in to temptation. The song suggests that by chasing after fleeting desires, one can end up with a lonely heart.