Which headphone brand's $3 billion acquisition by Apple in 2014 was largely built on the success of its celebrity musician endorsement strategy?

The relationship between musicians and product endorsements has evolved into a multi-billion dollar industry. From signature instruments to headphones and beyond, artist endorsements can make or break a music product in today's market. This poll tests your knowledge about one of the most significant endorsement deals in music history that changed how artists partner with brands. Think you know your music business trivia? Let's find out!

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Beats by Dre (initially co-founded by Dr. Dre and Jimmy Iovine)
Skullcandy (partnered with Snoop Dogg and Mix Master Mike)
Bose (endorsed by Keith Urban and Eminem)
Sony MDR (promoted by Taylor Swift and Justin Timberlake)