Janet Jackson’s 30 best songs – ranked!

As the singer announces she's selling memorabilia including a wedding dress and tour outfits, we assess her greatest works

A career curio, 2008's Discipline album was mainly notable for what it lacked, with no songwriting input from Janet Jackson and no songs written with longterm collaborators producers Jimmy Jam and Terry Lewis. Still, its Darkchild-produced lead single is a metallic-sounding, electropop-leaning behemoth built around the uncompromising lyric, heavy like a first day period".