Andri Joël Harison was born in Vienna, Austria, in 1995.

He is actually performing as an arranger, conductor, improvisator, composer, multi-instrumentalist, pianist and singer.

From the age of 13 months he showed his gift by playing harmonious melodies on his keyboard. Going to kindergarten he felt more and more attracted by music playing and went on performing his own improvisations on keyboard during the parties, for instance famous Christmas songs. At that time he started playing the guitar.

At the age of four Andri Joël Harison was able to play by ear Ave Maria of both, Charles Gounod and Johann Sebastian Bach, as he has realized it as background music of a computer game. Since then, Andri Joël Harison has been improvising well-known tunes. At the age of six, he went to basic music classes to the Viennese Children’s University of Music and Applied Arts.

The same year he started playing the organ first by teaching himself before being taught by his father. During the ceremony of the First Holy Communion in May 2003 at the age of seven he performed the Toccata as well as the Fugue d-Moll BWV 565 of Johann Sebastian Bach. He had been performing the whole primary school through during church service.

His career as a singer had started as he was nine years old. One year later, some of his teachers choose him to join music classes in order to perform as a soloist as well as in a duo during Christmas events at the Grammar School of Music in Vienna (Musikgymnasium Wien VII). Reading notes was taught to him only in the first year of secondary level.

The very first piano lesson was taken at the age of ten years in the class of Ms. Silvia Pereyra de Geberovich at the Viennese Music School 11 (Musikschule Wien XI). He has already won several prizes in the young musician competition "prima la musica" as a soloist as well as in a chamber orchestra (2007, 2008, 2009, 2010, 2011 und 2013, 2014). In 2012 his arrangement of Francis Poulenc’s Sonata for 2 clarinets and piano got first place in the same competition, as he was performing with the Trio Appassionato.

In March 2010 he represented Young Austrian Musicians during the 65th Chopin-Festival in Duszniki Zdroj (Poland). The same year he entered the seventh international contest for piano six and eight hands in the Bavarian Music Academy (Bayrischen Musikakademie) in Marktoberdorf (Allgäu, Deutschland) and got second place with the Trio Appassionato founded in 2010 performing with famous "Valse und Romance" of Sergei Rachmaninoff and the most experimental music oeuvre "Revancha" (Tango Milonga) of Alejandro Geberovich.

On June the 16th 2011 the Austrian television ORF broadcasted a special documentary about the high talented young musician. Next day the first performance of his concert with orchestra took place, as he was both conductor and leading his own orchestra, in the concert hall of his Music School in eleventh Viennese district (Musikschule Simmering).

Since late 2011 he has been taking singing lessons in the class of Christine Wagner, his singing debut as a solo singer was given in June 2012, with the chamber choir of the Viennese music school (Kammerchor des Wiener Musikgymnasiums). 2012 he founded and conducted his own choir - the Vocaholix A-Cappella Ensemble. On February 2014 he took part in the state competition singing of Vienna "prima la musica" for the first time and won the first prize with his own composed song "rêve d´amour".

Andri Joël Harison studied orchestral conducting with Johannes Wildner and opera coaching with Konrad Leitner at the University of Music and Performing Arts in Vienna. Currently he is working on his own compositions and arrangements. His previous appearances include guest appearances in numerous renowned theaters and concert halls.

He performed at the opening concert of the 29th Annual Congress of the European Piano Teachers Association on October 24, 2014 at the Anton Bruckner Private University in Linz. In the same year he released his first CD “Antologia” with piano works, songs and chansons (Tonal Audiophile Productions). On November 17, 2016 Joël Harison gave a piano recital in the Bösendorfer-Saal of the Mozarthaus Vienna, which was entitled “Soirée de Vienne” and contained the repertoire to be heard on this CD.

On October 6, 2017, he participated in the 18th International Music Competition in Osaka / Japan, where he was awarded the "Espoir Prize" in the Piano Solo category (the only one with his own composition).
In November 2017, he presented his second CD "Musician", published by Gramola in the Bank Austria Salon in the Viennese Classic and Romantic periods, as well as his reinterpretation of the Donauwalzer, Wiener Bonbons and his own paraphrases on themes from the famous operetta "Bat" by Johann Strauss son. The focus of his new album is on the revitalization of the works of Johann Strauss (father and son) on the piano.
In February 2018 he received the Heinz Arnold Memorial Scholarship as accompanist at the 5th International Young Talent Competition of the Richard Wagner Foundation Leipzig. In 2019 he conducted the choir and orchestra of the Wiener Tonkunstvereinigung.
Since September 2020 he has been a member of the Opera Studio of the Vienna State Opera as pianist and répétiteur.