Listening to music while your baby is swimming can help them relax and enhance their enjoyment of swimming. The following are some types of music suitable for babies to listen to while swimming:

1. Soft classical music: such as Beethoven's "Moonlight Sonata", Mozart's "Serenade", etc. These music have soothing melodies and are helpful for Baby relaxes.

2. Children's songs: Such as "Two Tigers", "Little Star", etc. These songs are simple and easy to learn, with catchy lyrics, which can keep babies in a happy mood while swimming.

3. Ocean music: Such as the sound of waves, the calls of seagulls, etc. These sounds can simulate the real ocean environment and make babies feel close to nature.

4. Brisk dance music: such as reggae, Latin dance music, etc. These music have a bright rhythm and can make babies full of energy when swimming.

5. Natural sounds: such as birds chirping, streams, etc. These sounds can make babies feel the beauty of nature and help relax them.

In short, when choosing music for your baby to swim, pay attention to the rhythm, melody and volume of the music to ensure that they do not make your baby feel nervous or uncomfortable. At the same time, you should also pay attention to your baby's reaction and adjust the type of music according to their preferences.