Okay kiddo, haazinu is a special song that was written a long time ago. It's like a story that people sing to remember important things.
The song talks about how God created the world and helped the people of Israel. It also talks about how the people sometimes made mistakes and didn't listen to God, but how God still loved them and wanted to help them.
The song is really important to Jewish people because it reminds them of their history and their connection to God. They sing it every year during a special holiday called Yom Kippur, which is a time for asking for forgiveness and starting fresh.
In summary, haazinu is a special song that talks about God and the history of the Jewish people. It helps them remember important things and is sung during a holiday called Yom Kippur.