Bee Gees Or Not Bee Gees?

Here's the Smooth Top 7 Bee Gees compositions performed by other artists! How many of these did you know were written by the Gibb brothers?
The Bee Gees not only dominated the music charts over three decades as artists, they also wrote some of the most recognisable songs for other artists too!
Here's the Smooth Top 7 Bee Gees compositions performed by other artists!
How many of these did you know were written by the Gibb brothers?
7. Dionne Warwick - Heartbreaker
The Bee Gees wrote the lion's share of Dionne's 1982 album 'Heartbreaker' which includes this hit along with 'All the Love in the World.'
6. Samantha Sang - Emotion
The only UK hit for Australian Samantha Sang, Barry Gibb sang the backing vocals on this track originally intended for the Gibb brothers 'Saturday Night Fever' soundtrack. The Bee Gees did finally record 'Emotion' in 1994.
5. Frankie Valli - Grease
Written for the film version of the musical 'Grease', Barry Gibb once again provides backing vocals and Peter Frampton plays guitar.
4. Barbra Streisand - Woman in Love
Barry and Robin Gibb wrote this for Barbra's 1980 album and scooped the Ivor Novello award for best song that year.
3. Yvonne Elliman - If I Can't Have You
Featured on the Saturday Night Fever soundtrack, the Bee Gees released their own version a month later as the B-side to 'Stayin Alive'.
2. Diana Ross - Chain Reaction
The Bee Gees were initially unsure whether to approach Diana Ross with 'Chain Reaction' as they were worried that she wouldn't want to perform a pseudo-Motown song in her later career.
1. Dolly Parton & Kenny Rogers - Islands in the Stream
All three Gibb brothers wrote this originally for Marvin Gaye, but it ended up providing a second number one single in the US for both Dolly and Kenny.