Anton Sokolov's Lab Journal is a book found in The Knife of Dunwall.
This creature has weakened considerably since its capture, and its output is quite low. I've attached electrical stimulators to the beast. A mild current increases output by twenty percent, to the considerable complaint of the whale, I might add. Increasing the voltage will likely kill the creature, so further exploration will have to wait on a stronger specimen. For now, the music continues.