There are at least two artists that go by the name Maro:

1) Maro is an artistic name of Mariana Secca, a 27 year old multi-instrumentist and composer from Lisbon, Portugal. In 2018, she released her first solo album, in 3 volumes: Maro, Vol. 1, Maro, Vol. 2, and Maro, Vol. 3. All songs are organized chronologically and are sung in Portuguese and English.
Maro started studying classic piano at the age of 4, later completing the Conservatory Diploma at the age of 17, along with her High School Diploma.