To obtain a hit in France, Mecano decided to collaborate with Pierre Grosz, a lyric writer, who had already written several songs for Elsa ("Quelque chose dans mon cœur", "Jour de neige"). Grosz accurately translated their song "Mujer contra mujer" to produce the French single "Une femme avec une femme". The music is composed by José Maria Cano. It was recorded in French ("Une femme avec une femme") and Italian ("Per Lei contro di Lei"), giving Mecano their first truly global hit.

The single entered the French Top 50 Singles Chart at number thirty-four (#34) in the September 9, 1990 chart edition. It climbed quickly and peaked at #1 for seven weeks, from October 11 to December 22, 1990. After having been #2 for three weeks, the single kept on dropping in the chart and left it on February 16, 1991 (22 weeks in the chart).

After a prestigious Iberian career, Mecano became the first Spanish group to reach first place in France's Singles Chart. The song was certified Gold disc in 1991 by the French certifier SNEP, for a minimum of 250,000 copies sold. According to the Infodisc Website, this single is the 601st best-selling single of all time in France, with 493,000 sales.

This song deals with lesbianism, seen through the eyes of a friend, who doesn't want to pass judgment on this relationship and prefers to be tolerant. At the time, the subject was taboo in France and had almost never been tackled in a song.

The videoclip is largely in black and white and features Ana Torroja singing in front of a white fence. There are also two women in love who arm wrestle, which represents their different point of view regarding whether or not to hide their homosexuality - one of them says hiding it is not good, the other says there is no choice.

...
Wikipedia