EyeToy – Groove – Playstation 1

EyeToy - Groove - Platform: Playstation 1

Master level difficulty: 
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To unlock as master difficulty, get an A in one of the tracks. 
You will then have a new difficulty level. It is (as far as 
I can tell) exactly like hard mode but with less warning when 
the heads will appear 

Track 21-25:
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Complete tracks 1-20 all the way through on any mode