I like P!nk, been a casual fan for a long time (Sober is hands down my favorite song in my playlist) and there are four lines of lyric from her 2006 album I'm Not Dead (not going to mention the song here for fear I might jinx this), that I want to use in the opening of 'M'.
Tomorrow I'm calling the William Morris agency to get preliminary approval (or not) and, hopefully, the price to include all four lines, or even the two that freaking SCREAM this book, so that I can have the legal details all figured out before I send it out to my agent, and, if the lines are pricey, if their cost can be included in the book's sales contract, if it sells. The song I want to quote wasn't a hit, so I don't know if that'll have any bearing or not. This is kind of new territory for me. Any other quotes I've used have either been written by me and put in the story (like the rabbit's poem in Threads of Malice) or written by a friend who only charged me a dollar plus attribution in the front matter (a hundred or so words used as the book Nella read Risley in Ghosts in the Snow)
Some people think that 'fair use' means you can lift a small portion of any published (or non published) piece for your own use. You *sort of* can, if you're reviewing it, and there's no potential to make money, AND that the amount lifted is very, very small. However, since this is, hopefully, a book for commercial sale and it's one full verse of a song, I will get some sort of permission before I include it on the manuscript I send to my agent (or at least have a contract in hand that tells how much said permission will cost, if anything).
Respecting copyright is essential, even for as little as thirteen words of a song lyric. Regardless of P!nk and her agents' decisions on price, if I can include the lyric, she and Billy Mann will get full credit with the lyric and in the book's front matter.