Unusual combination of music and the singing of the parakeets, I believe they like the melody and the sound, such birds are known to have a love to different sounds like they like to listen and to copy the voices of people, other animals and even sounds of something. It is incredible to hear that because you can’t really imagine how such sounds could be created in the vocal box of such little birds. That was really romantic and I can understand that you can spend hours just listening to them. Thank you for sharing :)