Error:  expects at least 2 parameters.
Usage: `php  /path/to/file1.xrns file2.xrns [mode] [keep_octave=<yes|no>]`

Valid modes are: 
 
 * 0: chaos
 * 1: shuffle
 * 2: harmonic_minor
 * 3: locrian
 * 4: lydian
 * 5: melodic_minor
 * 6: pentatonic_blues
 * 7: pentatonic_major
 * 8: pentatonic_minor
 * 9: pentatonic_neutral

To keep octave, the 4th parameter must be 'yes' or '1'.

 will output randomized file (file2.xrns) to current working directory.