What's the key of music b5?

The so-called B5 in music theory is not only a treble (si)7 with an octave higher, but a (si)7 with at least six bass points.

Usually, the music we know consists of seven notes, which are called "C, D, E, F, G, A, B" by fixed sound names, "1, 2, 3, 4, 5, 6, 7" by notation, and "do, re, mi, fa, 7" by volume names.

The fifth octave of the seventh scale plus five semitones becomes the scale of 12, and the pentatonic scale is more commonly used in China traditional folk music. Although it only uses five notes, it has a unique charm.

brief introduction

The pentatonic scale is characterized by no semitone (second degree), which is called "pentatonic scale without semitone" or "pentatonic scale with whole tone" in detail. Widely popular in Asia, Africa, some islands in the central Pacific, Hungary and Scotland, and native American tribes before Europeans arrived in America.

Often referred to as the "China scale". Its five orders have special names in the traditional culture of China, namely: public, business, communication, righteousness and Yu. In the Tang Dynasty, "harmony, division, b, delay and fairness" were used. Its interval organization is that each octave has three whole tones, which are divided into two strings (the upper corner of the palace) and a Dan Xian (the Zheng language), and the two segments are separated by a □ tone, as shown in the following example 2: Each tone in a scale can be used as a tonic to establish a mode, which can form five different pentatonic modes.