You're My Number One is a club classic by Radiance featuring Andrea Stone on vocals. It was released in 1983 on Are'nBe Records, a small dance music label which only put out a few 12-inches. Another Are'nBe club classic is Fresh Band - Come Back Lover.
Here's the dub mix of the Radiance 12-inch.
The Munga track You're Mine pretty much leaves the Radiance original intact, adding in some percussions and tightening the beat a bit. It can be downloaded from the Munga web site.
Two more versions... The Osvaldo Wilson edit and the Murky Waters edit, which can be downloaded from the players below.