But at Largo Thursday night (May 3), some 280 fans got a partial glimpse as a pop-up show by father-and-son partners Neil and Liam Finn found Campbell as a surprise guest on two songs, one of them a deeper-than-deep Mac track. What kind of additions Neil Finn and Mike Campbell will make to Fleetwood Mac lineup is a question that will have to wait till the newly reconfigured lineup goes on tour in October.
