The Singer is simply a minstrel and has no special abilities like Legend Lore. But, since it is very difficult to earn a living as a minstrel, most Singers use their agile fingers to also learn the thieve's trade. However, when they become proficient enough in music, most hope to become the permanent member of a lord's household, and do not need to continue to steal to survive. Of course, some learn to like being a thief and just use their musical ability as a cover. This caste encompasses all of the talents that people use on stage.
Most Actors are, as well as being good actors, very good with sleight of hand and stage magic.
There are excellent schools throughout The Realm to teach an Actor his trade. Again, since it is very difficult to earn a living as an Actor, especially early in one's career, many turn to thievery as a way to survive, but an Actor has another option. There are travelling troupes of Actors throughout The Realm, and any young Actor can audition to become a member. If accepted, he is guarranteed bread and board as long as he continues to perform. There is a game played throughout The Realm which is much like chess, called T'nasra.