Our third best Ross track once again sees us returning to 1980's diana for its final inclusion on this list - the much-loved, Upside Down. Upside Down was one of Diana's biggest worldwide hits, reaching number one throughout Europe, Australia, New Zealand and in the US. Quite rightly so, as it is one of the singer's most memorable tracks featuring a bouncing melody, addictive hooks and catchy lyrics (mostly repetition of "Upside down, boy you turn me.") In the particularly inventive video for the track, we see a variety of shots of Diana simply turning around and gazing into space. Some say it's the Citizen Kane of music videos.