Okay, so imagine you're in a big building, like a church or a school. Sometimes, people go into a special room in that building called a chapel. In this chapel, people sometimes sing songs together. This kind of singing is called chapel music.
Chapel music is usually very peaceful and calming. It's the kind of music that can help people feel closer to God or to their own thoughts and feelings. It's different from other kinds of music you might hear on the radio, like pop music or rock music, because it's meant to be sung in a special place, like a chapel.
There are lots of different kinds of chapel music, but most of them have simple melodies and are sung in groups. Sometimes, people play instruments like the guitar or piano to help with the singing. Chapel music can be really beautiful and moving.