[Harry:]
Does she tell you she loves you,
When you least expect it?
Does she flutter your heart,
When she kisses your neck?

[Perrie/Harry/Zayn:]
No scientist,
Or biology
It’s obvious,
When he’s holding me.
It’s only natural, that I’m so affected.

[Jade:]
Oh,
And my heart won’t beat again,
If I can’t feel him in my veins.
No need to question,

[Jade/Harry:]
I already know…
 [bad word] ]
It’s in his/her DNA, D-D-D-DNA,
It’s in his/her DNA.
And he/she just takes my breath away,
B-b-b-breath away.
I feel it every day.
And that’s what makes a man/girl,
Not hard to understand/So hard to understand
Perfect in every way,
I see it in his/her face.
Nothing more to say,
Its in his/her d-d-dna.

[Harry:]
It’s the blue in her eyes,
That helps me see the future.

[Liam:]
Fingerprints,
That leave me covered for days.

[Louis:]
(Yeah hey yeah.)

[Jesy/Harry/Louis:]
Now I don’t have,
Any first degree.
But I know,
What he does to me.
No need to worry,
It feels so familiar.

[Jade:]
Oh,
And my heart won’t beat again,
If I can’t feel him in my veins.
No need to question,

[Jade/Liam:]
I already know.
 [bad word] 
It’s in his/her DNA, D-D-D-DNA,
It’s in his/her DNA.
And he/she just takes my breath away,
B-b-b-breath away.
I feel it every day.
And that’s what makes a man/girl,
Not hard to understand/So hard to understand
Perfect in every way,
I see it in his/her face.
Nothing more to say,
Its in his/her d-d-dna.

[Leigh-Anne/Harry:]
There’s something ‘bout his/her kiss,
Contaminates my lips.
Our energy connects,
It’s simple genetics.
I’m the X to his/her Y,
It’s the colour of his/her eyes.
She/He can do no wrong,
No he/she don’t need to try.

[Little Mix/Niall:]
Made from the best,
He/she passes all the tests.
From my heart beating fast,
It’s cardiac arrest.
He’s/She´s from a different strain,
That science can’t explain.
I guess that’s how he’s/she´s made,
In his D-D-D-DNA

[Little Mix:]
Oooooo

[Harry:]
(oooooh)

[Liam]
(yeaaah)
(It´s in her DNA)

[Harry:]
it´s in her DNA
[Perrie:]
Oooooooh
 [bad word] 
It’s in his/her DNA, D-D-D-DNA,
It’s in his/her DNA.
And he/she just takes my breath away,
B-b-b-breath away.
I feel it every day.
And that’s what makes a man/girl,
Not hard to understand/So hard to understand
Perfect in every way,
I see it in his/her face.
Nothing more to say,
Its in his/her d-d-dna.