Nicklas at the mellotron. Note he still wears the guitar, probably for a faster transition between the instruments during a song.
Anna never switched during a song - her cello's on the other side of the stage, for gosh sake! She spent about half her time on cello and the other half on mellotron.
I was a little bummed that they don't do the mellotron intro to Karelia, which may be impossible live with only the four musicians but it was still a thrill to hear them open with my favorite song of theirs.