Choose ONE topic. Total of 100 words maximum.1. With the quest for album sales adopted in the 70’s, rock music sounds like an empty, calculated venture. Compare new, progressive rock-like bands such as Kansas, Styx, ELO, Queen and Heart. Each offers new insights into the style, including concept albums and artwork. How do they make, arguably, sophisticated music in light of industry pressure for sales?2. What role does recording technology advancements play in furthering artistic vision? Use three examples of different albums and artists.3. Corporate rock artists realized the potential for maximizing popularity by doing stadium tours rather than smaller, concert halls. How did that increase the perception of living the “rock star lifestyle”?