During her most fertile phase, women tend to be attracted to more complex music and to having a hypothetical relationship with the musician involved. The research suggests that women are more attracted to men who produce more complex music at their fertile time because they are seeking out superior genetic material for their offspring. That is, of course, making the assumption that men who produce more complex music, for example, some jazz musicians, are brainier than, let's say, the members of Status Quo might be. Apologies to any Status Quo fans out there!
The study also supports Darwin's theory that the function of music is sexual and is a means of attracting the opposite sex. The Daily Mail article says:
When it comes to longer term relationships, women seem to have no preferences regarding musical, the complex music is only more attractive to those seeking short-term relationship and for reproduction purposes!