On her decision to cover the Led Zep song, Lee says singing the track to her baby son Jack helps get the little one to sleep. She says: "This song is a classic that I've loved for as long as I can remember. It puts me at peace. My friend and manager, Jordan, had recorded the instrumentation for fun and when I heard it a few months ago, I knew instantly that I had to sing on it.

"Listening to mommy sing usually helps get Jack into that elusive sleepy place, and this song has been a regular rotation nap-time hit around our house this fall.

"As I was preparing for the November Evanescence shows, I just really wanted a moment like this in our set. So I showed this version to Troy, who made it a personal challenge to master a finger-picking-based song, which was outside his comfort zone. Not that you could tell - he sounded amazing." Check out the cover song - here.

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