He received his Diploma in 1989 when he performed Ludwig van Beethoven's Violin Concerto in D major, accompanied by the Kielce Philharmonic Orchestra.

He has performed with many Polish bands between 1992 and 2008 including Ankh, Closterkeller, De Press, Firebirds, Grejfrut, Hunter, Kasa, Lizar, Lzy, Mafia, Maybe-b, Orkiestra Dni Naszych, Perfect, Szwagierkolaska, Teatr Kobiet, Tosteer, T-Raperzy znad Wisły, and Wilki.

He also performed with Maryla Rodowicz, Ilona Sojda, Wojciech Gąsowski, and Stan Borys.

Michal Jelonek has been featured on over 30 albums ranging from classical to pop, folk, rock and roll and heavy metal.

He has performed over 1600 concerts in Poland, Brazil, the Czech Republic, Estonia, Lithuania, Latvia, Mexico, Germany, Russia, Slovakia, Sweden, Switzerland, and Ukraine.