Valaška is a Czech folk music group from the Valašsko region in the Czech Republic, famous for their traditional folk songs and melodies. While I couldn't find information on the group's specific founding members or detailed history, their name is indeed associated with the rich cultural heritage of the region. The group's discography suggests they have been active for several decades, as indicated by their 30-year anniversary release '30 let Valašky'. Their music often features traditional Czech instruments, and their songs frequently incorporate folk themes and storytelling.

Valaška's music style is characterized by lively rhythms and melodies, often featuring accordion, fiddle, and other traditional Czech folk instruments. Their songs, such as 'Zdálo se mi, má panenko' and 'Jen pro vás', showcase the group's ability to create catchy and engaging folk music that resonates with listeners from the region and beyond.