The Gentry love to be entertained and moved, especially by music. Fairest trained as Minstrels spend their durance serenading their Keepers, sometimes with an instrument, sometimes using only their voices.
The Minstrel’s blessing is Perfect Pitch: a Minstrel changeling can spend a point of Glamour to re-roll any failed dice on one Expression roll (so if, for example, a Minstrel who rolls six dice and gets 2, 5, 6, 7, 8 and 9 can spend a point of Glamour to re-roll the 2, 5, 6 and 7). They also excel at soaking up the adulation of a crowd when performing, enjoying the benefit of the 8-again rule for any attempt to harvest Glamour from the emotions of the spectators during their own performance.