The old first album curse, with hit after hit on the firs album (50 cent - The Massacre, The Killers - Hot Fuss and others) and then when they try to back the same success up with a second album, even a third with little to no success. Even sometimes to critical success the second album can fall flat commercially due to downloads or lack of promotion.
But is it wise to follow the same path? Make the same sounds, or just change completely, why even make a second album? Front man of the Silversun Pickups, Brian Aubert, questioned why he and the other band members need to make another album, for them? Or for the record label?
But raises a very good question, how long should bands be making music for? Do they make music for the sake of it? Or because they enjoy it? You can tell when an artist has put in all effort or none and it can reflect in the sales of the album.
But all in all sometimes second albums are better than debut releases because they build and expand on something that is already there, but sometimes they follow a similar pattern, the first album is about wanting to make it famous/being famous, while the second one is about being famous/living on the road and a third would be about lessons they have learnt, if the band hasn't already split up.