Yamaha Mobile Owner's Manual page 4

Editing phrases
Phrases from the Phrase Viewer can be edited at any time. For details, refer to
Editing Phrases.
NOTE
MIDI events and certain other parameters cannot be edited for Preset phrases or for User phrases
created by saving Preset phrases.
Editing voices
After adding phrases to a part, you can change or modify its voice. For details,
refer to Editing
Parts.
4
Mobile Music Sequencer Owner's Manual