There are two artists listed on MusicBrainz with the name Partner:

2) Partner was a Dutch melodic pop band from the late 1970s and early 1980s mostly remembered for their hit 'Kayuta Hill'.

3) Partner is a Canadian punk duo from Sackville, NB, consisting of Lucy Niles and Josée Caron, whose topics of music cover women of dreams, sex bracelets, and knives that are too hot. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.
Artist biography from last.fm