Day Eleven: Love (5.1, available on the special edition of The Human Equation)

Ayreon: Åkerfeldt sings the parts of Fear in The Human Equation, the 2004 release.

In 2004 came The Human Equation.

From the album The Human Equation - Day Sixteen: Loser...

Full The Human Equation Trailer.

She sang in Ayreon album The Human Equation, portraying the character Passion.

"Day Eleven: Love" is the fourth single by Ayreon, released on 2004, from their album The Human Equation.

No doubt why it was part of the Human Equation, rather than required solely for procreative purposes.

The Human Equation by Ayreon (2004)

There is also a piano version of The Human Equation's "Day Six: Childhood".