[quote name='flyfisher' timestamp='1381672531' post='2242044']
So, pretty much any band that stays together for more than a couple of years then?
[/quote]Yeah it seems so.
But a lot of the bands that change sound usually have a few changes in personnel such as the original Fleetwood Mac to the other . If you take Sweet, the personnel never changed, although added to, but the singer didn`t have such a strong voice that you could automatically tell it was the same band. Although as pointed out to me, I don`t know Sweet that well, so maybe if you followed the band you might know. If Noddy Holder was in that band, you would instantly know as his voice is fairly unique, along with Brian Johnson.