Classic is a Polish band that plays light, dance-based pop music-- known as 'disco polo' in Poland. It has gone through numerous personnel changes, with frontman Robert Klatt being the only constant. Their best known hit is "Hej Czy Ty Wiesz" (in English: "Hey, Do You Know").
These are photos from concerts where Classic played, so they may be of other bands that played the concert as well.
Franz Ferdinand
Lollapalooza Brasil 2013 Mar 29 - 31, 2013 São Paulo, São Paulo, Brazil Uploaded by Andres40ff
Queens of The Stone Age
Of Monsters and Men
The Flaming Lips
Gary Clark Jr.
The Black Keys
Holger
Kaiser Chiefs
Ludov
Two Door Cinema Club