His worldwide collaborations include: Alfredo Kraus, José Carreras, Teresa Berganza, Dulce Pontes, Lucio Dalla, Luca Carboni, Vittorio Grigolo and others.
During his collaboration with the famous Portuguese artist Dulce Pontes touring around the world since 2003 and being her permanent conductor, orchestrator and pianist, he also had the pleasure of working with Academy Award Winner Ennio Morricone and Horacio Ferrer, Astor Piazzolla's poet.
He has performed under the baton of acclaimed conductors such as Vladimír Válek, Valeri Vatchev, Alexander Myrat, Dimitris Agrafiotis, Nick Tshouchlos, Simeon Cogan and others.
In May 2017, at the request of Mikis Theodorakis, he presented symphonic works of the latter, in Cologne, in the presence of the composer himself, and on 1 September 2017, Stefanos once again appeared at the Herodes Atticus theatre, in the framework of a charity concert to support the Association of Friends of Children with Cancer "ELPIDA", next to Maria Farantouri and Sofia Manousaki.
[1] He has composed the Special Olympics' Anthem and also the song of the Union "Mazi gia to pedi – Together for the child", for charity purposes of which Stefanos gave a concert in September 2012 at the Odeon of Herodes Atticus (Athens Herodion).
Stefanos finished his last project abroad entitled «Bloody Faeries», a production of legendary British producer Haydn Bendall and he continues to give concerts in Greece and worldwide as a soloist in recitals and in collaboration with famous orchestras.
The most recent concert he gave was at the Chopin Academy of Music in Warsaw, in January 2014, where Stefanos presented for the first time his new "discovery" Sophia Manousaki, a very young and talented singer of the new generation, in front of a very demanding audience, winning rave reviews.
On 27 August 2014, Stefanos and Sophia Manousaki launched the brand new institution "Αrt in the square» at the Cyprus Limassol Marina, in front of a large audience.
Also, on September 5, 2014 Stefanos participated with huge success, in the charity concert "sing me an angel", which took place at the Odeon of Herodes Atticus (Athens Herodion), in collaboration with the internationally renowned tenor Mario Frangoulis and Norwegian soprano Sissel, under the direction of conductor, Richard Balcombe.
Many people consider the tour "Sinantisi" by Mikis Theodorakis, Stefanos Korkolis and Sophia Manousaki as the success of this year's winter Also, the song "Thes" from the album entitled Pes mou t' alithina sou in lyrics of Rebecca Roussi and music of Stefanos Korkolis, which was sung in a unique way by Dimitris Mitropanos, thanks to a tasteful TV spot, came back to the news scoring a great success 11 years, after it was released, so it gained the hearts of all Greek people and conquered the first positions even in the international charts.
Stefanos continues the concerts all over Greece and abroad while in April 2018, was released his new album, a double cd entitled "I should like to relate this memory" which includes songs and orchestral works inspired by Constantine P. Cavafy's poems.