The Manchester quintet A Certain Ratio were known for incorporating disco, funk, and dub elements into the post-punk sound of the late '70s, creating their own unique funky and industrial dance-oriented style. Formed in 1979, the band signed to Factory Records – the independent label home to post-punk and New Wave pioneers such as New Order and Joy Division – and released their debut album _To Each..._ in 1981. This year marks the band's 40th anniversary and in its honor, they've released _ACR:BOX_ (via Mute), a collection of B-sides, unreleased studio tapes (including a demo with Grace Jones), alternative recordings and covers. Today Peak Time correspondent Lauren Martin speaks with the band about the process of unearthing this archival material, tales from their Factory days and what happened with Grace Jones.