Marc van Roon (born 1967 in The Hague) is a Dutch jazz pianist. He combines music performance with his work as a creative facilitator for leaders, groups and organizations in change and learning processes applying the art of improvisation as the main source of inspiration. He has composed songs and orchestra pieces for dance companies and various music ensembles and produced several CDs for other artists and his own ensembles.
Van Roon has collaborated with Dave Liebman, Clark Terry, Art Farmer, Charlie Mariano, Billy Hart, Santi Di Briano, Tony Lakatos, Michael Moore, The Netherlands Dans Theatre and Dutch jazz artists Ernst Reijseger, Tony Overwater, Wim Kegel, Jesse van Ruller, Susanne Abbuehl, Fay Claassen, Eric Vloeimans and Tineke Postma.
Van Roon began classical piano lessons at the age of ten. His interest in jazz and improvisation was sparked at a young age by his father Wouter van Roon, a professional jazz pianist. He studied music privately until the age of sixteen when he enrolled in the music program at the Royal Music Conservatory in The Hague. He studied with pianists Frans Elsen, Rob van Kreeveld, Geoffrey Douglas Madge and Lanny Kho. He graduated in 1991 and left for a post conservatorial study to New York City. There he studied with jazz pianists Barry Harris and Richie Beirach. He returned to the Netherlands in 1993 started his own trio and continued to collaborate with other musicians. At the same time he co-founded the creative artistic consultancy group Art in Rhythm with drummer/percussionist Joshua Samson. Thereafter he started to give lecture based learning experiences for audiences around the world.

Tony Overwater is an award winning bass player whose sound and unique way of playing have established him as a key player in the European music world. He is a remarkable solo performer and leader of his own projects but also a collaborative and attentive sideman. He is well known for his pioneering work in Arab music.
In 1995 Tony Overwater went on tour with the Yuri Honing Trio through the Middle East, notably Lebanon and Syria, and fell in love with Arab music culture. He met musicians from lebanon, Syria and Iraq and started a long time collaboration with the Lebanese singer Rima Khcheich.
He has been involved in Arab music ever since and developed a unique new playing style on the acoustic bass which allows him to play the microtonality of the Arab scales. He has been studying the maqams (scales), rhythms and songs of classical Arab music. He recorded several albums with Rima Khcheich and eventually became the musical director of her ensemble. Regularly Rima Khcheich and Tony Overwater play duo concerts in which they perform classical Arab music in muwashah style in which the acoustic bass replaces the Oud. This has never been done before and is highly successful at festivals around the world.
Tony Overwater played concerts with many arab musicians among which Moroccan ud player Said Chraibi, Syrian clarinetist Kinan Azmeh and Algerian violinist Kheiredinne M’Kachiche.
He started a salon of Arab music in the Netherlands, Salon Joussour, creating a bridge between musicians from the Middle East and Europe.
in 2009, together with pianist Rembrandt Frerichs and percussionist/drummer Vinsent Planjer, Tony Overwater formed the Rembrandt Frerichs Trio. Three musicians with strong interest and highly developed skills in Arab music and with roots in Western classical music and jazz united in the trio to play with different guest musicians from the Middle East.
Tony Overwater has created the music for many documentaries, among which the Berlin Award winning documentary Justice For Sergei and Om de Oude Wereldzee about Dutch politician Abraham Kuyper.