Room 7/7 is isolated in an extraplanar space, it's only connection to the Tower and the rest of the Middlelands the crystal floating at the north end of the room. When a portal is opened in room 7/6, this crystal becomes the gateway on the other end of that portal. At all other times, it remains closed and inoperable.

The room is incredibly hot. Any unprotected adventurers or objects risk igniting in flame, melting, or otherwise combusting, either sooner or later.

At the south end of the room is a dais with a large pipe organ on it. Playing the instrument is a large, amorphous, shifting mass of fire - The Crescendo of Flame! This destructive force wishes to escape and consume the Tree and the Tower in fire and song. But for now, all it can do is play songs on the organ to summon Fiery Licks into room 7/6.

The walls of room 7/6 are fit with shiny brass. The air is hot, almost unbearably so. Along the south wall is a dais with a large, cut orange crystal hovering above it. Flames leak from the crystal like tendrils, moving across the floor for a few feet before evaporating. Touching the crystal severely burns the adventurer.

In the middle of the room is a strange device - a box with knobs, a metal loop sticking out of one end horizontally, and a metal antenna sticking out the other end vertically. A theremin! Playing it reveals the air around it is super-heated, causing damage to the musician. If the correct tune is played on it, a flame portal opens around the crystal.

A large hole in a wall opens into room 7/5, where a Fiery Lick holding a brass clipboard and sporting round glasses (whose glass has long melted away) directs a cadre of goblin skeletons who themselves are ablaze to erect brass wall panels. The supervisor is surprised and delighted by the appearance of adventurers, presuming they are either here to swear fealty to the Crescendo of Flame or else have arrived to deal with the fey infestation on the floor. As the supervisor chats, the skeletons stop their work and take a break. Arches lead to doors heading east and west out of the room.

Room 7/4 is another part of the central stairwell of the Tower. The door opening to the floor bears a metal plaque with an inscription repeated in Common and in Goblin, warning not to open the door because a great, living flame of vast destruction resides on the other side. The door is unlocked, slightly open, and clearly has been in use for years.