Who is a blond harp player sings a song that goes leave the light on?

The blond harp player you're referring to is likely Joanna Newsom. She is known for her unique voice, intricate harp playing, and poetic lyrics. The song "Leave the Light On" is actually by the artist, but it’s worth noting that the title may sometimes be confused with other songs by different artists. If you need more information about Joanna Newsom or her music, feel free to ask!