七弦
七弦-
降B标准调弦在七弦或六弦琴上调低一个半音，如Nevermore的金属改革流派就在七弦琴上用这种调弦。
Takes B Standard on either a six or seven string guitar down a semitone ( or half step ) . For example , bands such as Nevermore of the progressive metal genre utilize this on seven string guitars .
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安菲翁：宙斯之子，泽萨斯的孪生兄弟，曾用其七弦竖琴的魔力把石头变成底比斯城墙。
Amphion : the son of Zeus and the twin brother of zethus , with whom he built a wall around Thebes by charming the stones into place with the music of his magical lyre .