Born and raised in Rio de Janeiro, capital of Bossa Nova, Ramatis began classical guitar studies at the age of seven. At the age of  twelve he began performing professionally at local bars and nightclubs. Pretty soon, he found himself backing up the biggest names in Brazilian Popular Music (MPB), including Roberto Menescal, Johny Alf, Peri Ribeiro, Maria Creuza, Claudia Telles, Elizete Cardoso, João Nogueira, Roberto Ribeiro, Jovelina Pérola Negra, João de Aquino, Marcus Moura, Moreira da Silva, Golden Boys, Tim Maia and many others.
Ramatis studied music at the Estácio de Sá University and was later tutored by the legendary Maestro Aristides Santos. Ramatis is considered one of today’s biggest Bossa Nova guitarist/bassist in the US and has been living in Miami for the past 10 years, playing MPB, Brazilian Jazz, Electronic Music and Bossa-Nova at the most prestigious local venues ( Jazid, Hemisphere Lounge, Flute, Jade,Favela Chic, Four Seasons Hotel, Delano Hotel, Amaturo Theater , Jackie Gleason Theatre, Gusman Center, Sunrise Theatre  etc, etc, etc).
In 2001 Ramatis won the International Brazilian Press Award for the "Best Musical Producer" of the year. He is also a successful songwriter, producer and arranger, currently signed to Warner Chappell Publishing.