Which visual element has remained consistent throughout Spotify's logo evolution since its 2008 launch?

Spotify has become one of the most recognized music streaming platforms globally, but its brand identity has evolved significantly since its launch in 2008. This poll tests your knowledge about Spotify's logo evolution and branding strategy in the competitive music streaming industry. Do you know which distinctive visual element has remained consistent throughout Spotify's brand iterations?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The sound wave pattern
The green color
The circle with three curved lines
The italicized font style