What is the meaning of "商角征羽宫" in Jay Chou's "Turkish Ice Cream"?

The phrase "商角征羽宫" is supposed to be adapted from "宫、商、角、徵、羽".

"Gong, Shang, Jiao, Zheng, Yu" (pronounced gōng shāng jué zhǐ yǔ) are the names of the five different tones in China's pentatonic scale, which are similar to 1, 2, 3, 5, and 6 in today's simplified Chinese musical notation, i.e., Gong is equal to 1 (Do), Shang is equal to 2 (Re), Jiao is equal to 3 (Mi), and Zheng is equal to 5 (Sol). The five tones are also known as the pentatonic.

Turkish Ice Cream - Jay Chou

Lyrics: Jay Chou

Music: Jay Chou

OS:

Hello, I'm a DJ

Next up on the list is

Dance music can be very musical

Mara? dondurmas?

Turkish Ice Cream is like a woman's song, it's like a woman's song.

Turkish ice cream is like a woman's heart

They spin around in front of you, but they're not sure

This music can be waacking or it can be locking

I'm playing you like a Turkish ice cream

A few chords and a couple of syncopations

I'm writing dance music that's musical

I'm selling ice, and I'm selling it like an ice cream, and I'm selling a couple of ice cream.

It's like selling ice and doing acrobatics

You'd better hope that if you work as hard as I do

Changing instruments is like changing weapons

What's the electric guitar doing out here at this time of year, anyway?

Who says Chinese style has to be written in the Shangjiao Zheng Yu Gong

I'll just get out of the car myself and direct the traffic of the music scene

What do I care what kind of style it is

Turkish ice cream, Turkish ice cream

Turkish ice cream, Turkish ice cream

Turkish ice cream, Turkish ice cream

Turkish marches, too much arranging

Eat a bite of ice cream and melt your heartbreak

I'll just take a bite of ice cream. Melt your heartbreak

Listen carefully, a few chromatic notes, a little bit Latin, a little bit passionate

That's the kind of surprise I want to give

A few high chords, a few syncopations

I write dance music that can be musical

It's like selling ice and doing acrobatics

You'd better hope that if you're as hardworking as I am

Changing instruments can be like changing weapons. It's like changing weapons

What's an electric guitar doing out here at this time of the year, anyway?

What do you care what kind of music they write

Turkey Ice Cream, Turkey Ice Cream

Turkey Ice Cream, Turkey Ice Cream

Turkey Ice Cream, Turkey Ice Cream

Turkey Ice Cream, Turkey Ice Cream