# of songs in a folder?

For the purpose of creating songs I can call up via MIDI, is there any limit to the number of songs in one folder? Is it just limited by the 127 program change numbers available?

For example folder 0 (127 songs) ; folder 1 (127 songs) etc etc…and if so, then (and tell me if I am on the wrong track) each folder is then called by a midi bank change command followed by the program change number, yes?

Thanks

A BB folder is limited to 99 songs.
A BB Project is limited to 99 folders.

thankyou