Dmitry Korostelyov was born in 1979 in Volgograd where he received his first piano lessons. At the Moscow Conservatory he studied composition with Alexey Nikolayev, graduating in 2003, then completed a postgraduate course in the class of Valery Kikta. He also studied harpsichord and was assistant to Tatiana Zenaishvili.
He was awarded the prize for Best Accompanist at the 2005 Rimsky-Korsakov Wind and Percussion Instruments Competition in Saint Petersburg. As a pianist he has performed with the Russian State Symphony Orchestra, Volgograd Philharmonic Orchestra, Pskov Philharmonic Orchestra, and Russkaya Conservatoria Chamber Capella. He appears as a pianist and a harpsichordist in many Russian cities.