Here's a post with the English translation:
Mariamman Thalattu is more than just a lullaby; it's a spiritual song that connects the devotees with the divine. The song is sung to: mariamman thalattu english translation
The rhythmic "Raro Rari Raro" refrain is meant to induce a meditative, peaceful state for both the singer and the listener. Key Symbols in the Hymn Here's a post with the English translation: Mariamman