Ford Fiesta mk7 2012 62 plate zetec s with Sony sound system and Bluetooth. iPod output playing echoing from microphone through the left speaker and won't play any music through iPod/USB or Bluetooth. I'm yet to try an aux cable but it's playing what my microphone is picking up. It was fine this morning but 6 hours later leaving my morning shift it just wouldn't work or play anything from my phone. Have turned the car off and on and the audio system and restarted my phone. Have also tried Apple Music and Spotify and nothing, it connects to my phone, says it's playing it, but there's no sound. Only echoing from my microphone receiver through the left speaker. Reluctantly had to listen to the radio instead of red hot chilli peppers, fuming. Any ideas what it could be?

Did you select another speaker/system for playback (happened to me once, cranked up the volume in the car until I realized Spotify was playing on the Echo in my kitchen)?