In the modern world of Kindles and iPhones, romance enthusiasts can sneakily read even the raunchiest of books with no one being any the wiser. Case in point: Fifty Shades of Grey. The Kindle team pulled together the top most highlighted passages of the book, so now we can see for ourselves exactly which saucy sections of Fifty Shades were getting people going. In addition to the more obvious lines — yes, a lot of muttering and moaning was involved — readers were also interested in the musical choices of Mr. Grey, perhaps so they could create their own sexy mixes. Find out the top 50 quotes.