There is more than one artist with this name: Decade were 80s french coldwave band. They released just one record: single Diva-Diva / Conquistador in 1987.
http://www.discogs.com/Decade-Diva-Diva-Conquistador/release/2050114 Decade (Est. 2009) are an alternative rock/pop punk band from bath, UK. Formerly known as 'Ready Set Low', under which they released their first EP 'Lost At Sea' (still up for free download http://goo.gl/IvLnA), they soon changed their name to 'Decade'. In 2011, they started making waves, finding themselves playing with the likes of D.

Read more about Decade on Last.fm.