Note: Not all fake books or real books have the same format, most will have sheet music with chords marked, some also have lyrics, a few have tablature, they are sometimes also available in different keys and arrangements to suit different instruments.
For an excellent collection of fakebooks to buy, checkout www.sheetmusicplus.com, who have a selection of some 1200+ to chose from, they also have good search facilities AND include content indexes for their books.
Song/Tune Title
Book
I Let A Song Go Out Of My Heart
RJSFB
I Let A Song Go Out Of My Heart
BFBE
I Let A Song Go Out Of My Heart
HLRJFB
I Let A Song Go Out Of My Heart
HLRJSFB
I Let A Song Go Out Of My Heart
RB
I Let A Song Go Out Of My Heart
RLBFB
I Let A Song Go Out Of My Heart composed by Duke Ellington, Irving Mills
JJRB
I Let A Song Go Out Of My Heart Duke Ellington, Irving Mills