大教堂的雄伟声音来自其大型管风琴。

The cathedral's majestic sound comes from its large pipe ___organ.

在听了一场音乐会后，她决定学习管风琴。

She decided to take ___organ lessons after hearing a concert.

掌握管风琴需要手指灵活和音乐知识。

Mastering the ___organ requires both manual dexterity and musical knowledge.