Moreso I've found when one purchases the less expensive fake books, one gets a lot of imprecise composition as if compiled not from original music, but taken from a recording in a less than perfect acoustic circumstance and often produced in the wrong concert key ... one entirely not favorable for the sound of trumpets. Too, I found the majority of fake books to be overloaded with less recognized songs. Want good music ... purchase original sheet music, albeit it being more costly. Hal-Leonard is just a printer and marketer of music who is paid by others to do so. Personally, I like C instrument music, preferably piano.