About one third of jazz is in blues form with twelve measures4 in a song and USES — blue notes, "the flatted third, fifth, and seventh notes of the musical scale."
大约有三分之一的爵士乐采用蓝调形式，一首歌有12小节，使用“蓝音”，即把第三、五、七个音阶降半音(如c大调的E、G、B)。
The blues scale only has five notes, so that greatly simplifies our melody.
布鲁斯刻度只有五音符，因此大大简化了我们的旋律。
Single notes playing is the basic technique of blues harmonica which is worth making much practice.
是的，单音是练习布鲁斯口琴的基础，是值得花时间去练习的。
In order to play melodies, or Blues an Rock lead and accompaniment, you've got to play single notes.
为了演奏乐曲旋律，或布鲁斯、摇滚，你必须演奏单音节。
The blues lessons teach you how to bend notes. This technique is also useful for playing tunes.
布鲁斯课程教授如何压音，这种技巧在吹奏曲子的时候很有用。
That is why the lessons about blues, that is, lessons 21 to 40, talk so much about bending notes.
这也是在课程21到课程40里，为何要花篇幅去讨论压音的原因。
That is why the lessons about blues, that is, lessons 21 to 40, talk so much about bending notes.
这也是在课程21到课程40里，为何要花篇幅去讨论压音的原因。
应用推荐