Best solution for music streaming

Hello community! Since the S90 is my first car without a CD player and I slowly but surely feel like music, which does not come exclusively from FM radio, would interest me which is the ideal solution for music streaming? Spotify, Amazon Music, Google Play Music,…? What does this look like? Open the app on your mobile phone and send music via Bluetooth to the Sensus? For me as an end-forties a bit difficult to get in and change myself. Thank you for your tips. LG, Nordisk.