Zespół Rockowy, or a rock band, is a musical group that primarily plays rock music, a genre characterized by a strong beat, simple melodies, and often focuses on themes of rebellion and love. Rock bands typically consist of musicians playing instruments such as electric guitars, bass guitars, drums, and sometimes keyboards. These bands can vary in size and style, ranging from small garage bands to large stadium acts. Famous examples of rock bands include The Beatles, Led Zeppelin, and Nirvana. Rock music has evolved over the decades, giving rise to various subgenres like punk rock, heavy metal, and alternative rock.