Are there XML like Standards to write Sheet music [closed]

Question

Is there an xml or some form of a text standard that one can write music sheets in? For example:

<key= "C" />
<tempo= "90" />
<beat= "4/4" />
<measure id="1">
  // some form of music goes here
</measure>

Answer 1

You can use MusicXML.

Here is a list of XML music formats