Recorded during Marianne Faithfull's early years with Decca Records, Morning Sun captures the raw, intimate atmosphere of mid-1960s British pop. The track exemplifies her signature style, blending folk sensibilities with emerging rock influences to create a sound that was both personal and universally resonant. As part of the Decca Years 1965-1967 collection, the recording reflects a pivotal period in her career where she transitioned from a child star to a serious musical artist. The song's melodic structure and vocal delivery showcase her ability to convey deep emotion without relying on complex production, establishing a foundation for her later work with The Kinks and her solo career. It remains a defining piece of her early discography, illustrating the vulnerability and authenticity that characterized her recordings from this era.