new_contents: import spotify
  
  from flask import Flask, request
  from twilio import twiml
  from twilio.rest import TwilioRestClient
  import urllib
  
  client = TwilioRestClient()
  app = Flask(__name__)
  
  
  @app.route('/', methods=['POST'])
  def inbound_sms():
      response = twiml.Response()
      response.message('Thanks for texting! Searching for your song now.'
                       'Wait to receive a phone call :)')
  
      song_title = urllib.quote(request.form['Body'])
      from_number = request.form['From']
      to_number = request.form['To']
  
      client.calls.create(to=from_number, from_=to_number,
                          url='http://sagnew.ngrok.io/call?track={}'
                          .format(song_title))
  
      return str(response)
  
  
  @app.route('/call', methods=['POST'])
  def outbound_call():
      song_title = request.args.get('track')
      track_url = spotify.get_track_url(song_title)
  
      response = twiml.Response()
      response.play(track_url)
      return str(response)
  
  app.run(host='0.0.0.0', debug=True)
  
subject: Implement flask app