Trio

Hop 1: Frank Sinatra and Julio Iglesias

both credited on Duets And Duets II (2005-11-22, UK & Europe) · source

Hop 2: Julio Iglesias and Dolly Parton

both credited on Crazy (1994, Netherlands) · source

Hop 1: Dolly Parton and Michael McDonald

both credited on Rockstar (2023-11-17, UK & US) · source

Hop 2: Michael McDonald and Dave Matthews Band

both credited on Under The Table And Dreaming (1994, US) · source

Hop 1: Tom Waits and Tom Scott

both credited on The Heart Of Saturday Night (1976, US) · source

Hop 2: Tom Scott and Dolly Parton

both credited on Rainbow (1987, Europe) · source

Hop 1: Dolly Parton and Charles Veal Jr.

both credited on Trio (1987-03-00, US) · source

Hop 2: Charles Veal Jr. and D'Angelo

both credited on Be Here (2002, US) · source

Hop 1: Ricky Martin and Sting

both credited on Pausa (2020-05-28) · source

Hop 2: Sting and Dolly Parton

both credited on Rockstar (2023-11-17, UK & US) · source

Hop 1: Dolly Parton and Jim Keltner

both credited on Trio II (1999, Australia) · source

Hop 2: Jim Keltner and The Thorns

both credited on The Thorns (2003, US) · source