The song 'Sally' by Paul McCartney is a nostalgic ballad that captures a reminiscent journey of love and affection. It tells the story of a character named Sally, highlighting key themes of longing, remembrance, and the complexity of love that stands the test of time. The lyrics paint vivid imagery of past times and moments shared, which tug at the heartstrings of the listener. Particularly poignant moments in the song include references to specific memories and the deep emotional connection felt towards Sally, encapsulating a sense of yearning and cherished memories.