Xylophones and xenomorphs

While I haven't posted in this group before, I've done alphabet challenges for the last few years. I've created a list of titles for that most elusive of letters: X.
https://www.librarything.com/list/20400/all/Titles-beginning-with-X

All contributions gratefully received!

>1 konallis: X for both authors and titles was a most difficult challenge. Am taking your X title list to my bookstore on the next trip. Thanks!

Hope it's useful! If you find any I've missed, please add them.

For anyone interested, I wrote a short essay on dealing with the letter X. The Joy of X

Added a few more to your list :)

>5 AnnieMod: Excellent! Xala sounds interesting.