What is the meaning of wistfully

In "thirty are better than one" 1963 by andy warhol describe to what degree this image depicts rhythm or pattern

What is a system which kings rulers and other wealthy individuals provided financial and other support to artists? feudalism commissions partronage all of the above !

What is one popular pop artist or group (from today or from the past)? why does this person/group's music fit into the pop genre? why do you think the person/group was successful with their music?