Loose Bloose - Bill Evans

Loose Bloose - Bill Evans

Is the key of this song set accurately?
:))BOB

That's how I found it in the bill evans fake book, in ut: first chord is Eb7

I was thinking about the "set" key on the iRp chart.
The chords seem correct, just not the designated iRp key.
Did the fakebook indicate flats/sharps at the start of the chart?

:))BOB

In the original sheet the key signature is Gb for C instruments

Ok, so the concert-key chart written out in six-flats. (First chord Eb7)
Thanks
:))BOB