Born in Warsaw, composer and teacher, son of the composer Ryszard Sielicki. In 1975–80 he studied composition in the class of Andrzej Dobrowolski and Włodzimierz Kotoński at the Music Academy in Warsaw. In 1984 he continued his studies, notably in computer music, with Ton de Leeuw at the Sweelinck Conservatoire in Amsterdam, thanks to a grant of the Dutch government. He participated in the International Composition Workshops in Amsterdam (1984 and 1988), Summer Courses for New Music in Darmstadt (1986), and summer courses in Avignon (1991), as well as numerous music courses and workshops in Poland. 

He is an award winner at the Polish Composers’ Union Youth Circle Competition, Polish Composers’ Union Warsaw Branch Competition, International Composition Competition in Geneva, and International Electroacoustic Music Competition in Bourges. Many of his works have been broadcast for the Polish Radio archives and for records, as well as being performed at festivals such as Warsaw Autumn, Poznań Music Spring, Warsaw Music Meetings, and others. 

Edward Sielicki is a distinguished composer of music for children. In 1994, the Wydawnictwa Szkolne i Pedagogiczne published his work Jakie to łatwe! czyli nowy sposób uczenia śpiewu wielogłosowego (How simple! or a new way of teaching polyphonic singing written with Ewa Marchwicka), which features over 200 custom compositions for children. He has received commission for children’s music from the Do-Re-Mi Festival in Łódź and the orchestra of the Fryderyk Chopin State Music Schools Complex in Warsaw.

He has received many composition scholarships from the Polish Ministry of Culture and the Arts, and in 1989 received the Stanisław Wyspiański Award, 2nd Grade for lifetime achievement. A record of his Jubilate Deo, a psalm for a cappella choir (1994), was nominated to a Fryderyk Award in 2001. 

Edward Sielicki has been active as a teacher for three decades: in 1982–87 at the Karol Szymanowski State Music College in Warsaw, and for another ten years at the Fryderyk Chopin State Music Schools Complex in Warsaw. He has authored music curricula, and has worked at the Fryderyk Chopin Music University in Warsaw from 1987, where he is currently a professor. In 2009–13 he was Deputy Dean of the Composition, Conducting and Music Theory Department. Currently he heads the New Music Chair at the same University. In 1992–93, he lectured at the summer university in Marly-le-Roi, and has for many years headed the composition class at the Keimyung University in Daegu, Soith Korea. 

Selected works (from 2010): Korean trails for clarinet, cello and piano (2010), Nostalgy of the Infinite for string orchestra and tape (2010), Sinfonietta for five accordions, percussion and piano (2010–14), Multimedia Preludes for electronics and video (2012), Ensaladasfor brass quintet (2012), Fandango-Fantasie after Antonio Soler for violin and string orchestra (2012), Concerto per archi (2012), Rains,concerto for piano four hands and string orchestra (2012–13), L’Estro sarmonico, concerto for accordion and string orchestra (2012–13), Musica orea for flute, cello and harpsichord (2013; also version for viola, double bass and piano, 2013), ...et nos cedemus amori..., cantata profana for vocal sextet and electronics (2013–14), Onde chiare e serene for tape (2014), Memorabilia, concertante fantasy for bandoneon and string orchestra (2015), Chopin’s Crumb in a Cage for two pianos and percussion (2015), North Mazovian Mazurkas for flute, violin, cello and accordion (2015; rev. for flute, violin, viola and piano, 2016; rev. for violin, viola, cello and piano, 2017), Images from Warsaw: the Palace of Culture, electroacoustic work (2016), At the Margin (after Paul Klee) for bass clarinet and tape (2016), Mokotów Electronic Mazurka (2016), Micrologus II for accordion, string orchestra and harpsichord (2016), Micro Strategy (With Shadow of Chopin) for piano and live electronics (2016), Little Electronic Orphans (In Memory of Eugeniusz Rudnik), electronic music (2016), Shadow Play I – Distorted Noises for tape and video (2016), Seven Simple Mazurkas for string orchestra (2016), Secondo Concerto per archi Hortus Conclusus for string orchestra (2016–17), Clay Tablets for percussion and string orchestra (2017), Galyzianer Rhapsody for clarinet and string quartet (2017), Sonata Per fas et nefas, 2nd version for two violas (2017), MicroSonata for eight violas (2017), Hommage a Szymanowski for violin and cello (2017), Sarang for violin, cello and piano (2017), Missa Brevis Coreana – Kyrie and Gloria for choir and piano / organ (2017), Aphorisiade – Puzzle Opera, children’s opera (with other composers, 2018), Basements. Mysteries from under the floor, radio feature opera for voices, electronics, animations and Polish sign language (2020).