Should a unit that contains a musician wish to march whilst within 8" of an enemy unit, it may apply a +1 modifier to its Leadership characteristic, up to a maximum of Leadership 10, when making its Leadership test.
Source: Warhammer: The Old World Online Rules Index
Should a unit that contains a musician wish to march whilst within 8" of an enemy unit, it may apply a +1 modifier to its Leadership characteristic, up to a maximum of Leadership 10, when making its Leadership test.