For music that makes hamsters happy, you can choose brisk and cheerful music, such as fast-paced pop music or lively children's songs. This music can stimulate the curiosity and energy of hamsters and help them relax. At the same time, avoid choosing music that is too noisy or high-pitched to avoid causing discomfort to your hamster. Please note that the volume of the music should not be too loud to avoid damaging the hamster's hearing. It is best to choose a soft volume so that your hamster can enjoy the music happily. Please pay attention to the hamster's reaction. If they show signs of irritability or discomfort to certain music, they should stop playing it immediately