There are 2 bands named Mig 21 1] An innovative czech band with 3 released albums - Snadné je žít (It's easy to live), Udělalo se nám jasno (We've driven home) and Pop pop pop. Its members are Pavel Hrdlička, Tomáš Polák, Jan Hladík, Tomáš Kurfürst and frontman Jiří Macháček - popular also as an actor. Most known songs - Snadné je žít (It's easy to live), Slepic pírka (Chicken tags), Tančím (I'm dancing), Vlajky vlají (The flags are waving), etc.
http://www.mig21.cz/

Read more about Mig 21 on Last.fm.