First of all, let me explain to you one, the method of jamming songs in 1.7...
Suppose, your channel is in Music Square .
Then go to the other 3 free channels... (e.g., you're now in Dynamic)
1: Go to Dynamic
2: Select a free range, and right click on any channel
3: Click "Exit"
4: Go to Music Square
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A: After entering the Music Square, you are in the Novice Practice Area, congratulations, the song has been successful
B: After entering the Music Square, you are not in the Novice Practice Area, unfortunately, the song has failed. This card song failed, please repeat steps 1-4
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Myself today card song After I succeeded, I found that although I have a fast song and I can jump the reverse key, I don't have free mode, advanced 8K, personal synchronized 8K, couple mode, fighting dance, group same