Seven female solo artists have registered simultaneous number ones on singles and albums charts, writes Alan Jones.
 
Barbra Streisand, Whitney Houston, Mariah Carey, Celine Dion, Kylie Minogue and Beyonce Knowles have all done it once - but Madonna has done it three times, spending three weeks simultaneously number one in 1986 with single Papa Don't Preach and album True Blue, two weeks in 1989 with the Like A Prayer single and album, and completing her hat trick this week ...