Super groups - collections of big names thrown together to create beautiful music and perhaps sell a few albums – can be a mixed bag.
When two years ago, Dave Stewart of Eurythmics wanted to bring together a group of diverse musicians, he called it Super Heavy.
He is joined by Joss Stone, Damien Marley and no less than Sir Mick Jagger – who joins his first group since the Rolling Stones half a century ago.
The interminable jam session resulted in almost a day and a half of recorded music.
Ali Ikram takes a look at Super Heavy
Watch the video