While I thoroughly enjoyed their set, Andy not only screwed up three songs lyrically, but his energy level was off as well. While opening night rust excuses the lyrical missteps, it doesn't explain the lack of energy. If anything, one would expect the energy level to be through the roof on opening night. In addition, when Andy was lost lyrically, Torsten looked pissed. Band members don't normally get pissed at each other for honest mistakes. However, they do get annoyed if you show up on stage (cough, cough) "under the weather".
As Tammy noted, Brainstorm is such a great live band, they have a lot of wiggle room. It was an "A" performance for an average band, a "B" for Brainstorm.
Zod