"I Should've Followed You Home" is a duet sung by Swedish recording artist and former ABBA member Agnetha Fältskog and British singer-songwriter and Take That frontman Gary Barlow. Written by Barlow and producer Jörgen Elofsson, it was the third single taken from A.

"I Should've Followed You Home" was co-written by Gary Barlow and Jorgen Elofsson. Elofsson was looking for the ideal duet partner to match Agnetha for the album and was delighted to get his first choice: "To me Gary Barlow was the perfect partner," he explained. "His warm and thick voice matched perfectly with Agnetha's pop soprano voice. I must say I was nervous when I presented my favourite choice but luckily for me one of Agnetha's favourite songs turned out to be "Back for Good" by Take That!"

Barlow and Elofsson have worked together in the past and recorded the song first with Barlow's vocals. Fältskog loved the track and was delighted to turn it into a duet, feeling that the two voices together were a fantastic combination. Their recording sessions happened separately so the pair did not finally meet in person until she visited London in May and the two met for the BBC documentary Agnetha: ABBA and After... which was broadcast in June.

On 12 November 2013 Fältskog sang live "I Should've Followed You Home" at the BBC Children in Need Rocks 2013 concert in London. She sang a duet with Gary Barlow, the organiser of the event. It was her the first live performance for 25 years.

The video premiered at YouTube on 18 November 2013 (2013-11-18), the same day as the release of the single itself.

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