In the Assassin's Guild

It is a pity the ninjas don't allow us to use their facilities, as I would relish the possibility of trying their pottery room, learning their tea ceremony and doing some flower arranging and marbling (the last option isn't impossible, but the equipment for doing it counts as furniture, and I have no place to put it). The morporkian Assassin's Guild is open to all, though -at least, most parts of it. The poison labs remain 'off limits-, and taking a look at its classrooms, one find curious learning oportunities...
One I wasn't able to activate was the Komt of Yoyo's telling me assassin stories in the varied living languages of the Disc (he'll only do it if you're an assassin yourself), but nevertheless, you can try plaque-reading and (on a totally different scale) piano playing at the Modern Language and Music classroom. What I did discover to my delight in the next classroom (Monsieur le Balourd's Dance and Deportment) was this:

A large, airy room with strong wooden floors and a high, arching ceiling. A small piano sits carefully in one corner of the room, while an elaborately set up table is in another area. Posters outlining the basic steps of various popular dances line the walls, while instruction manuals and copies of Twurp's Peerage are scattered over a low table under the window. A room full of everything a student needs to turn themselves from bumbling buffoon, to social butterfly.
There is one obvious exit: west.
Monsieur le Balourd is standing here.
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look ceiling
The ceiling arches high above your head, inlaid with rare woods. A crystal chandelier hangs from the centre.
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look chandelier
A delicate crystal chandelier hangs from the centre of the ceiling, casting light over the room.
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look piano
A recent invention, this piano is actually a pianola, a clockwork piano that plays music without the need to have a pesky musician sitting at it. It is a very expensive instrument, much more so than its non-clockwork counterpart, but is still within the Assassins' Guild's budget and is used to train students to deceive the eye.
play piano
You covertly wind up the piano and pretend to play a delicate Llamedos hymn.
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play piano
You covertly wind up the piano and pretend to play a delicate sonata.
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play piano
Saving...
You feel more able to deceive the eye.
You covertly wind up the piano and pretend to play a delicate sonata.

There's lots more to play with, in the class and in the guild. I'll keep looking...