RequestQueue queue = Volley.newRequestQueue(this);  // this = context

// prepare the Auth Get Request
JsonObjectRequest lastFMAuthRequest = new JsonObjectRequest(Request.Method.GET, lastFMKeyURL, null,
        new Response.Listener<JSONObject>()
        {
            @Override
            public void onResponse(JSONObject response) {
                // display response
                Log.d("Response", response.toString());
            }
        },
        new Response.ErrorListener()
        {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.d("Error.Response", error.toString());
            }
        }
);

// add it to the RequestQueue
queue.add(lastFMAuthRequest);