AG Flek is a Czech rock band formed in 1984. The band's name translates to "AG Stain" and is a reference to the fact that the band's members were all from the same neighborhood in Prague. AG Flek's music is characterized by its catchy melodies, energetic rhythms, and socially conscious lyrics. The band has released over 10 albums and has toured extensively throughout Europe.

AG Flek's most recent album, "Blázni Umírají Nadvakrát" (2022), is a concept album about the lives of people who are struggling with mental illness. The album has been praised for its honest and unflinching portrayal of mental health issues. AG Flek is one of the most popular and respected rock bands in the Czech Republic, and their music continues to resonate with fans of all ages.