I don't know what they are for
Power-ups can only be purchased with Coins, and can be used to:
1.) Shuffle playlists when it's your turn to send a match2.) Remove 2 Wrong Songs in 1 on 1 games so you only have 2 choices3.) Remove 2 Wrong Artists (same as above)4.) To add more Best Match opponents if you do not have VIP Status.5.) To add Boosts (Speedster/XP Boost) to your Party Mode games.
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