In 1989 he moved to Rio de Janeiro where he was invited to take part in several music contests such as Baura and Avaré (São Paulo), which Lenine also attended, Turmalina (Minas Gerais), Cordeiro (Rio de Janeiro) and Carajás (Pará), among others.
His experience as a studio musician led him to record his own debut CD titled Viver Você in 1994, alongside composer César Nascimento.
In the spring of 1998 he decided to leave Brazil in an effort to enrich his musical experience and chose Madrid, Spain as his new home.
In 2004 he recorded his second solo CD “Fascínio” and in doing so consolidated his identity as a composer. Working together with artists such as Madrid-born poet Daniel Lesmes, he achieved a CD which features a colorful fusion between Brazilian, Latin American and Spanish rhythms.
Over the last few years he has also participated in such recording endeavors as composer and singer Rosalía Royo's "Paradoja", composer Helios Ruiz's CD "Se Venden Alas?", which Glaston both produced and arranged, as well as Colombian artist Claudia Gómez's CD "Vivir Cantando", on which she sings Gladston's "Luzes".
He also participated of the album “Um pouco de Mim”, songbook by important brasiliam lyricist Sergio Natureza in 2005 and also took part on “Orillania”, album by argentinian musician Carlos Aguirre in 2012.
In 2005 he recorded his third CD, "Glaston Galliza The Album", produced exclusively for the Japanese market as a joint endeavor with producer Lava.
In 2007 Gladston releases two more albums: “Idas e Idas”, his four solo cd and “Madrid”, another project made for Japan.
In 2008 he goes in his first Japanese tour, together with the Japanese percussionist Tomohiro Yahiro and the great uruguaian pianist Hugo Fattoruso.
In 2009 he releases “Íntimo”, his sixth album and in 2011 Gladston releases “Alvorada”, first collaboration with japanaese pianist and composer Miyuki Onitake.
This album was promoted on a tour with 30 concerts in Japan.
In 2014 it was released “Tres Calles”, album in duo with uruguaian percussionist José San Martín.
In 2015 Gladston releases “Lados”, his nineth album recorded in Belo Horizonte, Brasil.
“A vontade e o Vento” is his latest work, an acoustic album published in 2018.
Gladston performs regularly with his band and also works as a producer for other artists.