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Freeze Data G-70 "Style Makeup Tools"
described in the G70_V2-V3_Addendum pdf file. (Page 13)
It is always a good idea to save an editted Style with a different name.
In case of trouble you can easily go back and start over again.
Press this field to “commit” your orchestration changes
and change them to MIDI messages the Style Composer
can read. Changes you don’t commit are ignored by the
Style Composer. Note that “freezing” data is only necessary
if you intend to edit a Style using the Style Composer,
or to ensure that the settings can no longer be
modified by accident.
But be aware, there is a separate issue if you are trying to edit the ROM styles. You cannot save those back to the ROM area from within the G70. So, if you edit a ROM style, save it to the Internal memory area (or the card) but a Music Assistant entry or your own UPG refers to the original ROM style, it will still point to the ROM style after you do the edit (because the edit's in a different location)...
But, unlike the BK series (or most of Roland's arrangers), you actually CAN edit a ROM style to your preference, and then replace the ROM style with the edit. They all reside in a folder called ROMStyles which you can see when opening the G70's data on a computer via USB.
Now all the MA and your own UPG's that referred to the original ROM style will still go there, but it will be your edit.
We have an article here: www.roland-arranger.com/index.php/articl...g-the-rom-styles#122 explaining the procedure...
About the only issue that freeze is seriously needed for (unless, as Willem says, you use the Style Composer a lot, or the internal sequencer) is if you like to read the chords off of an SMF (MIDI file) while you are playing. If you use Makeup Tools to change the key of the SMF, the chords displayed will still be the original key's chords. But if you freeze the edits and overwrite the original, the chords will display correctly in the new key.