I was going to bring up the same point. Showing up for an audition, you know the songs but the band doesn't .
A very frustrating scenario indeed .
Here's a thought, if your auditioning for people you don't know always ask how long the other members have been with the band
You might be auditioning for a guy that's trying to save a sinking ship. Meaning they were not only auditioning bass players bur drummers, singers and guitarists. And the guys you played with at the audition were new members that barely knew the audition.
Blue