Bands and first albums...hmmm...a lot of times, a band is working the material that is their first album for a good long time...then BAM...they get signed, the record drops, and it's out on the whirlwind tour.
When they get back home, they realize that the record company wants that next album in 6-8 months. Unless there's a prolific writer or writers in that band, it's just not gonna happen the way that first album did.
just my .02