"Blue Moon" is a classic popular song and jazz-standard. It was written by Richard Rodgers and Lorenz Hart in 1934, and has become a standard ballad.
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Википедия
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Blue moon,
You saw me standing alone
Without a dream in my heart,
Without a love of my own

Blue moon,
You knew just what I was there for
You heard me saying a prayer for
Someone I really could care for

And then, there suddenly appeared before me
The only one my arms would ever hold
I heard a whisper, "Please adore me"
And when I looked, the moon had turned to gold

Blue moon (blue moon, blue moon)
Now, I'm no longer alone (blue moon, blue moon)
Without a dream in my heart,
Without a love of my own

And then, there suddenly appeared before me
The only one my arms would ever hold
I heard a whisper, ("Please adore me")
And when I looked, the moon had turned to gold

Blue moon (blue moon, blue moon)
Now, I'm no longer alone (blue moon, blue moon)
Without a dream in my heart,
Without a love of my own