Customizing jazz chord names

[Nick Busigin]

I am interested in changing the naming of jazz chords for some lead
sheets we are working on.    For example, I'd like to use the following
construct to print out chord names above a melody:

  \context ChordNames \chords { a2:min7 fis:min7.5- g:9+ e:m5-.7 } 
     
but with over-rides for a few of the default chord names.

I've read through the doc's, but am still a little unsure of what to do. 
I'd appreciate a few pointers on how to do these customizations/
over-rides.

Thanks in advance,

                                    Nick
                            (a lilypond newbie)

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Nick Busigin                                             address@hidden
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