Odd skills for a sell-sword to have, but that's the way the dice rolls sometimes. At least they are practical and i'd rather have them than sing or something.
In scenarios like this, I wish I was a halfling thief. Keeping my thieving to a minimum. I suspect something is behind the picture, or hidden away somewhere secret, but Admund doesn't have time or skills for that. It doesn't appear that that Brandt uses his house very much (bed hardly used - except for...well you know). So he's never at home or work. I think for sure he's up to something evil.