Singer says he starts to concentrate on the chords

Justin Timberlake says he’s unable to make love to girlfriend Jessica Biel when there’s a tune playing in the background.

The singer says he starts to focus on the beat rather than his woman.

‘I have trouble having sex to music because I start picking out the chords,’ he tells the Daily Record.

Justin, 27, and Jess, 26, have been dating since January 2007.