Today Katja discovered buds. In the past she has resisted anything on her head, on her ears or her eyes.
But today I was about to go for a bike ride and I took advantage of the fact that she likes to music, to show her that music can come out of earbuds because she was concerned with the things in my ears. It took a bit, but she started to hear the music by Coldplay. Within 3 minutes she understood how they worked and wanted the earbuds in her ears! It is fun to watch her learn.