Guitar Freaks And DrumMania: Masterpiece Silver - Play Style menu

Guitar Freaks: Extreme difficulty
Hold Green and press Pick2 at the music selection screen.

Toggle Bass and Open Pick guitar modes:
Press Pick, Green2, Pick at the music selection screen.
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Increase note scroll speed:
Press Green3 at the music selection screen.

Disable all active codes:
Press Pick4 at the music selection screen.

Sort music list:
Hold Green and press Select at the music selection screen.