Well I for one know only to my cost how important it is to mke sure you see a guest perform before you book them! Dont rely on recordings, these studios can make the worst singer sound great rather than grate! Those there at Bude last year will remember my memorable moment - and no Im not going into any more detail - you had to be there! I just wish someone had video'd me when said guest performed!
You live and learn!
Cheers, Lucy