A new Rolling Stones song will be available later this month and an old friend joined together with the band for the track. 

Bill Wyman added the bass line for a cover of Bob Dylan's "Watching the River Flow" for a new record called Boogie 4 Stu.

According to ContactMusic.com, the guys were never in the studio together at the same time to record. Charlie and Ronnie already laid down their parts. Keith recorded the guitar parts in New York, then it was sent off to Mick who added vocals and harmonica at a studio in France then Bill laid down the bass line.

The album is a tribute for Stones' co-founder Ian Stuart. Although Ian was never a full member of the Rolling Stones, he did play piano and keyboard with the band until his death in 1985 at the age of 47. Boogie 4 Stu drops April 19.

In other Rolling Stones news, there are rumors swirling that the band is going to hit the road next year to celebrate their 50th anniversary. Nothing has been confirmed as of yet, but Charlie, Keith and Ronnie all say they are open to a tour.