Grigory Gruzman was born in 1956 in Leningrad, Russia (today St. Petersburg).He began his piano lessons at the age of five. Due to his exceptional talent, he was admitted to the Music School for the specially gifted children at the Leningrad Conservatory. During his school-time, performed more than 300 times in numerous cities in Russia. In 1974, Gruzman began his studies at the Jerusalem Academy of music under professor Yali Wagman (ex-pupil of Rosina Lhevinne at the Julliard School of Music). During his last two years at the Academy Gruzman studied with professor Gregory Haimovsky (ex-pupil of professor Yakov Zack in Moscow; Y. Zacк was a winner of the 3rd International Chopin Piano Competition in Warsaw). He also attendet piano chamber music lessons with professor Alexander Tamir. In 1977, Gruzman was accepted into University of Music (Hochschule für Musik) in Freiburg, Germany, where he studied with the world-renowned professor Vitalij Margulis. Two years later he completed his artistic exam. Directly after his successful exam, Gruzman was offered a piano-teaching post at the same University. 1979 he attended an intensive courseheld by Diego Diez (ex-pupil of Claudio Arrau) in New York. He also participated in master classes held by distinguished artists like Claude Franck, Leon Fleisher and Alfred Brendel.

In 1980, Gruzman was appointed as the lecturer for the main subject-piano at the Music Academy (Akademie für Tonkunst) in Darmstadt, Germany, thus becoming one of the youngest music teachers in the german institutes for music. At the same time, he resumed his studies in Freiburg under professor Margulis. He then completed his concert exam (Konzertexamen) as a soloist in 1982 (in Freiburg). In the same year, he achieved an award with distiction at the international piano competiton in Monza; and in 1984, he was a finalist in the international piano competition in Vercelli (both in Italy). "On such an interpretation of Rigoletto Paraphrase, I've been waiting all my life," once said Herbert von Karajan and has invited Gruzman to Salzburg.

In 1986, his international concert carrer, both as a soloist and as a chamber musician, wich has been growing steadily and rapidly achieved a break-trough as he joined forces with two of his colleagues to form the „Shostakovich Trio“ (1986-1996). The ensmble performed on world-renowned podiums; such as Alte Oper in Frankfurt, Concertgebouw in Amsterdam, Wigmor Hall in London, Tchaikovsky Concert Hall in Moscow, to name bute of few. Critics from all over the world have been continuously proclaiming this trio to be one of the best ensembles of present day.

His numerous (more than 1000 times after his emigration from Russia) concert performances, appearances as a lecturer on international master courses and member of international jurys has brought him onto stages in almost every country in Еurope, the Far East, Latin-America, Australia and the USA. Everywhere his concerts are received with enthusiasm by the audience, the press, as well as the experts. About 100 of his best performances have already been broadcast by TV and radio stations all over the world. His numerous trio-arrangements and especially his arrangement of Modest Mussorgsky's „Pictures at an Exhibition“ for piano-trio have been received with enthusiasm by the public and the press world-wide. The Shostakovich Trio has performed from 1986 until 1996. When Misha Katz, cellist of the Trio, began to perform as conductor, the ensemble broke his carrer up.

Since 1988 Gruzman has been giving numerous performances of the complete cycle of Chopin's 24 Etudes. His CD of the Etudes, Op. 10 and Op. 25 by Frédéric Chopin (organo phon 90 112) was received in 1998 with a best estimation in music press. Gruzman is the only pianist who has recorded the complete Suite "Play Piano Play" by Friedrich Gulda (CD: organo phon 90126, Bach – Gershwin - Gulda). In 1998, Grigory Gruzman was named Professor for piano at the University of Music (Musikhochschule) in Hamburg. 2005-2014 Gruzman was president of the International Rachmaninov-Society (with headquarters in Darmstadt). In 2006 he was appointed as professor to the University of Music Franz Liszt Weimar. Here his obligation is not only to teach as a professor at the university but also at the Music High School Schloss Belvedere (special school for gifted children). His students have won over 50 awards in national and international competitions. He is artistic director and jury chairman at international Rachmaninov (Frankfurt) and Liszt (Weimar) piano competitions for young pianists.