Since 1983 I.Aleksiychuk gives many concerts in prestigious concert halls of Ukraine, Serbia, Slovakia, Germany, Italy and the USA as a pianist, composer, organist, member of chamber ensembles, as well as in a piano duet with the People's Artist of Ukraine, winner of international competitions Yurii Kot. The duo is the winner of three international competitions, two of which (ARD International Competition in Munich and Murray Dranoff Two Piano Competition in Miami) are considered some of the most prestigious music competitions in the world. The duo's repertoire includes works from world classics and original works, sometimes exclusive, created specifically for this duo.I.Aleksiychuk performed with the Bavarian Radio Symphony Orchestra, Munich, Germany (conductors: Wolfgang Balzer, Lothar Zagrosek);
MERCK Chamber Orchestra, Darmstadt, Germany (conductor - Christian Rudolf Riedel); National Symphony Orchestra of Ukraine (conductors - Volodymyr Sirenko, Viktor Ploskina); National Symphony Orchestra of Varieties of Ukraine (conductor - Natalia Ponomarchuk);
Zaporizhzhya National Philharmonic Symphony Orchestra (conductor - Vyacheslav Redya); ARCHI Chamber Orchestra, Kyiv (conductor - Igor Andrievsky); Kyiv Soloists’ Chamber Ensemble (conductor - Bohodar Kotorovych); New World Symphony Orchestra, Miami, United States (conductor: Neil Stalberg) and others.
Has participated as a pianist and composer in numerous international music festivals, gives master classes and participates as a jury member in international competitions.

Collaborator with choirs, orchestras, chamber ensembles and soloists. Many choirs have repeatedly received music awards and Grand Prix at international choral competitions for the performance of a work by a modern author, choosing to perform music of I.Aleksiychuk. In 2017 the Girls' Choir of the M,V,Lysenko Special School of Music under the direction of Yulia Puchko-Kolesnyk won first place in the world ranking of choirs in the category "Spiritual Music" for performing the program exclusively from the works of Iryna Aleksiychuk.

The composer's works were also performed by the Ukrainian State Symphony Orchestra; State Variety Symphony Orchestra of Ukraine; Lyatoshynsky Classical Music Ensemble; “Kyiv” Municipal Chamber Choir; Municipal Chamber Choir "Khreschatyk"; Women's Choir of the Drahomanov National Pedagogical University; Glier State Institute of Music Women's Choir; Children and youth choir "Dzvinochok"; Girls’ Choir of the M.V.Lysenko Special School of Music and many others.

Multiple winner of regional competitions for young pianists and composers, winner of numerous regional theoretical competitions (Khmelnytsky, 1974 -1983);Diploma holder of the National Competition for Young Composers named after S.Prokofiev (Donetsk, 1993);Laureate of the First International Competition of Chamber Music Performers "Golden Autumn" in the Piano Duos category (Khmelnytsky, 1993);Winner of the 45th ARD International Competition in the Piano Duos category (Munich, 1996);Winner of the 6th Murray Dranoff International Piano Duos Competition (Miami, 1997);Laureate of the First Ukrainian Composers Competition "Spiritual Psalms" for the best choral work by biblical texts (Kyiv, 2001).​
In February 2000 for concert activity and performance of modern music, was awarded the L.M.Revutsky Prize of the Ministry of Culture and Arts of Ukraine, the National Union of Composers of Ukraine and the National Union of Music of Ukraine.​
In May 2014 was awarded the Artemiy Wedel "Kyiv" Art Prize of the Kyiv City State Administration in the field of musical composition for the Cantata-mystery "Lullabies of Reeds" for soloists, choir mixed and symphonic orchestra in five movements.​
In March 2019 was awarded the M.Lysenko Award for outstanding achievements in the field of composition.

Performs a lot as a soloist and as a piano duo with Iryna Aleksiychuk in Ukraine (Kyiv, Kharkiv, Donets’k, Zaporizzhia, Lugans’k, Dnipro, L’viv, Khmel’nytskyi, Chernigiv, Cherkasy, Rivne, Sumy, Bila Tserkva, Zhytomyr, Vinnytsia, Mariupol’, Kamjanec’-Podil’s’kyi and others); Russia (Moscow, Saint-Petersburg, Kuybishev, Vologda); Kazakhstan (Karaganda); Belorussia (Minsk,Vitebsk); Lithuania (Kaunas); Estonia (Tartu), Poland (Krakov); Ex-Yugoslavia (Belgrade, Kragujevac, Kotor, Shabac, Nish, Split, Tivat); Slovakia (Bans’ka Bystrytsa, Koshitse); Germany (Leipzig, Dresden, Halle, Munich, Darmstadt, Bergkamen); U.S.A. (New York, Miami, Phoenix), Japan (Tokio), Italy (Carrara), France (Paris, La Madeleine, Harne), Spaine (Madrid, Barcelona, Bilbao), Portugal (Lissabon) - with concert programmes including works by Bach, Mozart, Beethoven, Schubert, Chopin, Franck, Schumann, Brahms, Debussy, Tchaikovski, Rachmaninov, Scriabin, Prokofiev, Shostakovich and many others.

● Performs with symphonic orchestras of Ukraine, Russia, Germany, U.S.A. and Japan. Among them: Academic Symphonic Orchestra of St.-Petersburg Philharmony (conductor – N.Alexeev); National Symphonic Orchestra of Ukraine (conductors – F.Glouschenko, Asushi Maeda, V.Sirenko); Symphonic Orchestra of Ukrainian Radio and TV (conductor – V.Zhad’ko); State Symphonic Orchestras of Kyiv, Lugans’k, Zaporizzhia, Khmel’nyts’kyi, Rivne, L’viv, Donets’k Philharmonies (conductors – V.Sirenko, N.Diadiura, V.Blinov, R.Nigmatullin, V.Redia, A.Dolinski, V.Ratsiuk, P.Tovstukha, N.Ponomarchouk, R.Filipchouk, I.Palkin); National Chamber Orchestra “Kyiv’ Camerata” (conductors – V.Matiukhin, V.Runchak); “New City Orchestra”, Tokio, conductor – Akira Naito; Volgograd Symphony orchestra (cond. Eduard Serov).

● As a piano duo with Iryna Aleksiychuk performed with:
Symphonic Orchestra of Bavarian Radio, Munich (conductors - Wolfgang Balzer, Lothar Zagrosek); Chamber Orchestra “MERCK”, Darmstadt (conductor - Christian Rudolf Riedel); Chamber Ensemble “Kyiv’ Soloists” (conductor – Bogodar Kotorovich); Kyiv Chamber Orchestra “ARCHI” (conductor – I.Andriyevski); New World Symphony Orchestra, Miami (conductor Neal Stulberg), and others.

● 2010-2014 - Solo concerts, playing with orchestras and chamber music (piano duo with Iryna Aleksiychuk), piano trio (with A.Bazhenov, violin and I.Kucher, violoncello), the cyclus "10 Beethoven's sonatas for piano and violin" with I.Andrievsky and D.Tkachenko (violin), flute evenings with Y.Shutko.

● Took part in the International Music Festivals. Among them: “Musiksommer-97” (Dresden, Germany), “Two Pianos Plus” (Miami, U.S.A.), “Modern Music Festival” (Ban’ska Bystrytsa, Slovakia), “Kyiv Music Fest”, “Music Premieres of the Season” (Kyiv, Ukraine), “Regina and Volodymyr Horowitz - in memoriam” (Kyiv, Ukraine), “Farbotony” (Kaniv, Ukraine), Festival of contemporary Krakow composers (Krakow, Poland), Richter-Fest (Odessa, Ukraine), Piano music Festival “Una tastiera per due mondi” (Carrara, Italy).

Since 1995 - twice a year holds master-classes in Kragujevac (Yugoslavia)August 1997 - holded master-classes in Kotor (Yugoslavia)2000 - 2002 - 5 times holded master-classes in Japan (Tokio, Kioto, Hiroshima)Winter 2012 - Master-classes in several cities in Republic of Macedonia and MontenegroJune 2007 - 2013, 2018 - 2019 - Professor in the International Summer Music Academy “V.Horowitz” in KyivJanuary - February 2014 - Master-classes in Serbia (Kragujevac, Nish), Montenegro (Tivat)May 2015 - Piano master-classes at Limassol Municipal school of music (Cyprus)August 2007 – 2024 - Master classes at the Colluvio Chamber Music Adademy (Austria)2017, 2020, 2023 - Master classes in Kunst-Uni, Graz, AustriaFebruary 2023 - Master classes in Academy of music and recital in Philharmonic of KaunasMarch 2024 - Master classes in music school of Split (Croatia)

December 1999 - the 1-st Pukhal’s’kyi for young pianists’ competition (Kyiv, Ukraine)March 2000 - the 1-st International S.Prokofiev young pianists competition (Saint-Petersburg, Russia)September 2000 - the 1-st International competition for young pianists, violinists and cellists (Tbilisi, Georgia)January 2001 - the 1-st International competition for young pianists GRADUS AD PARNASSUM (Kragujevac, Serbia)March 2003 - the 2-nd International competition for young pianistsGRADUS AD PARNASSUM as a chairman of jury (Kragujevac, Serbia)March 2004 - the 2-nd International competition for pianists MEMORIAL ISIDOR BAJIC (Novi Sad, Serbia)April 2005 - the 3-rd International competition for young pianists GRADUS AD PARNASSUM (Kragujevac, Serbia)Spring 2009 - the International “Davorin Jenko” piano competition (Belgrade, Serbia) andchairman of jury in the Serbian Republic competition (Belgrade)November 2013 - the International piano competition under patronate of D.Matsuev (Kyiv)May 2023 - the International piano competition in Trebinie (Bosnia and Herzegovina)May 2023 - the International piano competition in Tivat (Montenegro)May 2023 - the International piano competition in Tivat (Montenegro) and Czech Republic (Banja Luka)

From 1986 to 1993 - got musical education in Kyiv National Academy of Music as a pianist and as a post-graduate student at the piano department of the above Academy (under the creative guidance of professor Valeriy Kozlov).1988 - Prizewinner of the National Lyssenko Piano Competition (Kyiv).1990 - Diploma-holder of the All-Union Rachmaninov Piano Competition (Moscow).1992 - Prizewinner of the First International S.Prokofiev Piano Competition (St.-Petersburg).1993 - Prizewinner of the First International Competition for chamber music performance “Golden Autumn” in category Piano Duo with Iryna Aleksiychuk (Khmelnytskyi).1996 - Prizewinner of the 45th International ARD Competition incategory Piano Duo with Iryna Aleksiychuk (Munich).1997 - Prizewinner of the 6th International Murray Dranoff Piano DuoCompetition with Iryna Aleksiychuk (Miami).1995 - awarded by title “The Honoured Artist of Ukraine”.24.02.2000 - as a member of piano duo with Iryna Aleksiychuk was awarded by L.Revuts’kyi National Prize of Ministry of Culture of Ukraine, National Composers’ Union of Ukraine and National All-Ukrainian Music Union for concert activities and performing of modern music.2019 - became the Head of Piano Department No.1 in the National Musical Academy of UkraineDecember 2019 - awarded by title "The People Artist of Ukraine"Since 1994 - Professor at the piano department of Kyiv National Academy of music.