Leszek Wiśniowski  (nickname Hefi) – flutist, composer and educator. He is a graduate from Music Academy of Jazz in Katowice – the flute faculty. He is a laureate of numerous awards and honors in such a prestigious events like: “Jazz Juniors”- International Competition of Young and Debut Jazz Ensembles (1993), Siedlce Jazz Competition (1996), The Ministry of Culture Award (1998), “New Tradition”- Folk Music Competition, Warsaw (2001) Scholarship of the Minister of Science and Higher Education for outstanding artistic achievements (2015), Kosciuszko Foundation scholarship (2018) He mainly plays jazz and contemporary music.  He is a member of the National Flute Association and Association Muzyka Centrum. He has recorded  5 own albums and participated in the creation of 30 others. He performed solo parts on the soundtracks of nine films with music by Krzesimir Dębski and Zygmunt Konieczny. He colaborates closely with world-famous jazz and avant-garde flute artists Jamie Baum and Robert Dick.
His achievements include many world premieres of contemporary music. He is invited to take part in significant events of the international flute community.
In 2018 he was invited to join  a special, homage concert “Tribute to Dave Valentine” which took place in Orlando, USA where he performed together with American flute celebrities like Ali Ryerson, Rebecca Kleinman, Ernesto Fernandez, Orlando, Maraca Valle Nestor Torres, Mark Vinci.
He is the leader of the group Hefi Quartet. He has given concerts and recorded in Asia, America and Europe.