Led Zeppelin

Bright light almost blinding, black night still there shining,
I can't stop, keep on climbing, looking for what I knew.
Had a friend, she once told me, You got love, you ain't lonely,
Now she's gone and left me only looking for what I knew.
Mmm, I'm telling you now, The greatest thing you ever can do now,
Is trade a smile with someone who's blue now, It's very easy just...