Music's highest earning couple Taylor Swift and Calvin Harris are planning to join forces and release a song together.

The couple, who began dating following the Brit Awards earlier this year, have been keen to work together professionally for a while now despite the differences in their musical styles.

Rumour has it they've even met with high profile producer Detail about their joint venture, the man behind Jay Z and Beyonce's Drunk In Love. It is thought they might debut one of their completed tracks at the American Music Awards in November.

UK tabloid the Daily Star quotes a source as saying of the pair, "Taylor and Calvin have been speaking about collaborating since they started dating. They've had a couple of sessions jamming in the studio and are working with producer Detail."

The source continued, "Taylor has already been in LA laying down vocals for one of the tracks which could premiere at the American Music Awards later this year. Musically, Calvin and Taylor are from different worlds – but they are determined to bring their styles together."

Harris previously worked with ex-girlfriend Rita Ora on her single I Will Never Let You Down before parting ways in June 2014.