It seems strange to use the joinphrase "& Friends" to describe that Joss Stone and Sting are Friends of Les Paul.
Or do you think "& Friends" are other unknown people in addition to Joss Stone and Sting?
I mean, whould you enter a joinphrase for Michael Jackson like "& his brothers" and add the other 4 Jackson names from the band "The Jackson 5"?
With "technical glitch" I try to describe that the joinphrase "& Friends" is used as some kind of prefix to the following artists. Why should someone enter "& Friends" and then enclose "(Joss Stone and Sting)" as single artists but in brackets? The meaning of this joinphrase is just not that obvious for me.