Avellanet became a teen idol in Puerto Rico and across Latin America after being hired by Edgardo Diaz as a member of Menudo in 1988. He joined the group during the era popularly known as Menudo's Rock era.
Avellanet's CD debut came when Menudo recorded Sombras & Figuras, title of an album that produced hits for the group. Then came Los Ultimos Heroes, which was released in Portuguese as Os Ultimos Herois, and No Me Corten El Pelo.
Almost immediately after becoming a former Menudo, Robert and ex-bandmate and friend Rawy Torres formed a group named Euphoria during the early 1990s and recorded two albums.
In 1994 Avellanet went to college in Puerto Rico to study Advertising. In 1996 tropical music producer and business executive, Ralph Mercado, signed Robert to record a Salsa album under the RMM label. The album Sentir (1999), produced by master Isidro Infante, had success in several Latin American countries, and in New York and Puerto Rico.
In 2002 he moved to Miami to write & produce his new album as a solo artist. He’s become a well known soap opera actor, as well, working for networks such as Univision, Telemundo and Venevision Productions. Avellanet has also been in several theatrical plays.
In 2003 Avellanet and his former Menudo bandmates (Sergio, Ruben, Angelo and Rawy) made a reunion tour, naming it after the Los Ultimos Heroes album and had success in some Latin American countries.
In 2009 Avellanet co-produced an album titled JeT PriVado, featuring songs such as Jet Privado, Laberinto, No Te Arrepientas and Miserable. JeT PriVado includes collaborations from producer and composer Frank Santofimio (Gloria Trevi, Servando & Florentino, Rogelio Martínez), producer/engineer Andres Saavedra (Reyli) and composer Juan Carlos Perez Soto.
Jet Privado was released digitally around the globe on January 20, 2009 by the name RoBA and under the independent label Fabilous Entertainment.
During 2015, Avellanet joined fellow former Menudo members Miguel Cancel, Ray Reyes, Rene Farrait and Charlie Masso in a tour, once again using the name Menudo.Sentir (1999)
Jet Privado (2009)