The Rolling Stones have been around forever (nearly 50 years at this point), and they've cranked out a lot of great music. But, even the best relationships can have sour periods. The Stones had theirs in the mid 1980's. Mick pursued a solo career. Keith thought it was a stab in the back to the band at first, but also decided to try his hand at as a solo artist. His first album, "Talk is Cheap," actually outsold Mick's "Primitive Cool" CD, and is far and away a better album.
The big single of the album was a song called "Take it So Hard." The lyrics, like much of the other songs on the album, take shots at Mick being a sellout, and a backstabber. The band that backs Keith, The XPensive Winos (truly a fitting backing band name for Keith's group), provides a strong reggae influence, with a touch of blues.
The song and album proves that if Keith really wanted to, he could've led the Stones in Mick's absence. Sure, the sound would be less mainstream, and more blues-focused, but it probably still would've worked ... although, I still prefer Mick fronting the band.
Have a look at the video: