He was born in Šiauliai, where he began playing the piano. He continued his studies at the National Mikalojus Konstantinas Čiurlionis School of Art under E. M. Šernienė and A. Jurgelionis. Even as a student, he became a laureate of numerous national and international competitions, including: Ústí nad Labem (1982, 1st prize), the Young Performers Competition in Vilnius (1987, 1st prize), and the Piano Competition in Riga (1987, 3rd prize).

He studied at the Tchaikovsky Moscow State Conservatory under Professor V. Kastelsky and Professor L. Dedova.

As a pianist, he has performed solo in Germany, Italy, the USA, Denmark, Poland, and China. He has recorded with the Lithuanian Chamber Orchestra for Lithuanian Radio and performed at the celebration of the renewal of diplomatic relations between Lithuania and Poland.

He has twice been awarded a scholarship from the Ministry of Culture of the Republic of Lithuania for his concert work.

In addition to his solo career, Donaldas is a sought-after pedagogue – his students have received awards in many international competitions, such as the Roma Piano Competition, the Valletta Piano Competition in Malta, and The Magnus Competition. He regularly serves on juries of national and international competitions and gives masterclasses in Lithuania, Poland, Italy, and China.

He is the head of the piano department at the Vytautas Magnus University Music Academy and also teaches at the M. K. Čiurlionis National School of Art. Each year, he prepares themed concert projects with his students: in 2017 they performed the complete Études-Tableaux by S. Rachmaninoff in Lithuania and Poland; in 2018, the complete Preludes by C. Debussy; and in 2021, lesser-known works by F. Liszt.