诗人变守序的话唱歌能力失去，至于原文我并没有，译文中比较能说明这一点的是
“要具备暗黑卫士的资格，人物必须符合以下全部条件。”
很显然，赎罪后的pal已经恢复守善，不满足邪恶条件，所以无法具备黑骑的资格，那么黑骑的所有能力就无法生效。
以下摘自d20srd.org
Requirements
To qualify to become a blackguard, a character must fulfill all the following criteria.
Prestige Classes
Prestige classes offer a new form of multiclassing. Unlike the basic classes,
characters must meet Requirements before they can take their first level of a prestige class. The rules for level advancement apply to this system, meaning the first step of advancement is always choosing a class.
If a character does not meet the Requirements for a prestige class before that first step, that character cannot take the first level of that prestige class. Taking a prestige class does not incur the experience point penalties normally associated with multiclassing.
严格来说规则只规定了人物在获取第一个进阶职业等级的时候需要符合先决条件，并没有提及在获得进阶职业等级之后不再满足先决条件时会失去该进阶职业带来的能力。'
修改颜色因为黑体不明显……
