Encountered a JS output problem, seek the master

The final result I want is to use JS to output this

But now four arrays have been output, that is, do not know how to close together, please help the master.
The following results are output separately:

Reply to discussion (solution)

What is the output of PHP?

The output is four arrays, array one is all headings, the middle is separated by commas, array two is the singer, array three is the cover, array four is the MP3 path.

What is the style of the mention?
Do not know the format how to write code?

Jsonstr= "["; for (i=0;i
 
 < pre="">  
  
  
  
  
  
This can be composed of josn format, your own reference to modify it
  
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