I've kind of lost touch. My "fake books" were all hand written and photocopied. Even the better players were becoming so dependent on them, that it was detract

I've kind of lost touch. My "fake books" were all hand written and photocopied. Even the better players were becoming so dependent on them, that it was detracting from the music, so I went cold turkey and learned the tunes. An app called "iRealPro" has chord changes in a strange format, and somebody once created a Python library to decode it. There was once a book called "pocket changes" with just chord changes, and I think it was converted to text format, but can't find it anywhere online. The changes are an outgrowth of a quirk in the copyright law, where the melody and words can be copyrighted, but not the harmony. Wish I could be of more help.