Eric Alper - Canadian music correspondent, Publicist and Lifelong Musicaholic. THATEricAlper.ca

• Say Say Say - Paul McCartney and Michael Jackson (released 40 years ago today)
• Queen & David Bowie - 'Under Pressure'
• You’re The One That I Want - John Travolta & Olivia Newton-John
• Stop Draggin’ My Heart Around - Stevie Nicks With Tom Petty And The Heartbreakers
• Pet Shop Boys & Dusty Springfield - 'What Have I Done to Deserve This?'

Amy Sky -  is a Canadian singer-songwriter, record producer, theatre actress, and television host.

• Linda Ronadadt and JD Souther - Faithless Love
• Joe cocker Jennifer Warren - Up where  we belong 
• Marc Jordan and Amy Sky - Long Shot
• Elton John and Kiki Dee - Don’t go breaking my heart
• Ain’t no mountain high enough - Tammy Terrell and Marvin Gaye