Petros Andreadis (b. 2000) is a Greek classical–jazz clarinetist, pianist, and singer-songwriter. He is First Clarinet of the National State Orchestra of Greece (for 2025–2026) and holds both Bachelor’s and Master’s degrees from the Sibelius Academy in Helsinki, where he studied Classical Clarinet and Jazz Piano. He is a student of Spyros Mourikis. Petros has developed a new system of clarinet techniques that significantly expands the instrument’s expressive range. His innovations include two additional octaves of violin-like harmonics, chords, and pizzicato effects, allowing the clarinet to perform violin repertoire with natural phrasing and extended range. He is currently pursuing PhD research on these extended clarinet techniques. His performances have received over 7 million online views within the first year of publishing, attracting attention from musicians including David Bruce, Martin Fröst, Cory Wong, and Leonidas Kavakos. As a soloist and chamber musician he has appeared in major venues including:
- Musiikkitalo Concert Hall – Helsinki
- Megaron Athens Concert Hall
- Thessaloniki Concert Hall
- Smetana Hall – Prague
- Sala Palatului – Bucharest
- Shenzhen Concert Hall – China
He has collaborated with ensembles including:
- Finnish Radio Symphony Orchestra •Helsinki Chamber Orchestra
- National Opera of Greece
- National State Orchestra of Greece
He appeared as soloist of the SibeliusAcademy Wind Band, performing for YLE Finnish National Broadcasting and for the Prime Minister of Finland, and will appear as a soloist with the National State Orchestra of Greece in 2027.
Selected Press
Review from Třebíč Festival (Czech Republic): “The ‘Many Faces’ of the clarinet attracted hundreds of listeners to the Stone Hall, and no one regretted the choice of the Sunday evening program. Petros played the clarinet using a completely unique technique, which allows him to perform tones completely out of range for ordinary clarinetists. The sound in these passages is reminiscent of violin harmonics in perfect intonation, creating a unique and extraordinary listening experience. The audience immediately understood that Petros is a true interpretive magician.”