I Am Your Singer by Paul McCartney is a heartfelt love song that explores themes of companionship and devotion. The lyrics convey a deep sense of connection and commitment between two people, where the singer offers himself as a form of comfort and emotional support. Key themes include love, unity, and the intimacy of sharing one's life with another person. Poignant moments in the song include the declarations of unwavering support and the promise to always be there for the partner, showcasing a tender and affectionate tone.