I am really confused about the relationship among following genres:

• Math Rock
• Mid Westen Emo
• Progressive Metal
• Post Rock

I mean, when people talking about math-rock, they tend to mention mid-western emo chord, blabla. I’m getting more and more lost in those conceptions, however I begin to get things into shape when I think about this problem in a programming way.

So here is the result from My Own Understanding:

type Rock interface {
	// ... so many things to write
}

type MathRock interface {
	Rock
	TooManyTapping()
	BaicallyInstrumental()
	TooManyOddTimeSignature()
}

type PostRock interface {
	Rock
	BasicallyInstrumental()		
}

type MidWesternEmo struct {
}

type ProgMetal struct {
}


// Here are some example:
struct AmericanFootball struct {
	// Embed mid western emo struct 
	MidWesternEmo
}

// Implements all the Math Rock Method
func (a *AmericanFootball) TooManyTapping() {}

func (a *AmericanFootball) BasicallyInstrumental() {}

func (a *AmericanFootball) TooManyOddSignature() {}

// Implements all Rock methods...

What can we conclude from code above:

1. Math Rock can be treated as Post Rock, as it impelments all methods of the later one.

2. Gernes lik emo or prog metal are more eccentric to the band, thus should be regarded as structs. If one prog band implements all the math rock methods, that is playing music in a math rock way, it should also be regarded as a math rock band.

3. Same thing with Blues and Jazz. In this case, Blues should be struct and Jazz is an interface. You can play Blues in a Jazz way, then you are both Blues and Jazzy. But you can also play Classical in a Jazz way, then you are both Classical and Jazzy, as Keith Jarrett does.

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