Gražvydas Sidiniauskas was born on 11 April, 1992.
He studied at the Pranas Daunys training centre for Blind and Visually Impaired.
Finishing music school, he entered the Jazz Department of the Vilnius Conservatory of Juozas Tallat-Kelpša. A year later he went on his music studies majoring in "popular music" at the Stasys Šimkus Conservatory.
He took private lessons in composition from the composer Giedriaus Kuprevičiaus.
Aged twelve, Gražvydas wrote his first song "With you".
In 2011, he represented Lithuania at the Baltic Unity Day in Sweden.
The young singer reached the semifinal of the national selections for Eurovision (2012).
He is the First Prize winner of the International Contest of artistic expression for people with disabilities "Pavasario Vyturiukai" (2008).
Winner of the song contest "Idea" (2010), Gražvydas was awarded the Grand Prix of the national festival "Undiscovered talent" (2011), the I International Festival for the Blind "Sounds from the Heart" (Krakow, Poland, 2014).
In 2015, as part of the Lithuanian choir of the blind, he won the "Choru karai" national TV show ("Battle of Choirs").
He took third place in the TV projects "Two Minutes of Fame" (2011) and "The Voice" (2017).
Gražvydas plays saxophone and piano, writes songs and is currently learning to play the guitar.