2012 SQL to JSON Select

I am using MS SQL 2012. Is there a way to get results in a JSON format from a recordset and use them to pass them as a string to post to an URL ?

For example a simple query

SELECT FirstNm, LastNm, email 
FROM dbo.Users

So it returns:

{
  "first_name": "Aleks",
  "last_name": "Demo",
  "email_addresses": [
    {
      "email_address": "support@domain.com"
    }
  ]
}

Is this posible from SQL or do I need to do this afterwards in ASP. I am using ASP Classic.