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Piano adalah faktor X. Orang-orang kesulitan mengikuti struktur ketika tidak ada piano di sana, mengejanya. Itu membuatnya lebih mudah dipahami, terutama bagi orang-orang yang tidak tahu banyak tentang musik. Asli: The piano is the X factor. People have a tough time following the structures when there's no piano there, spelling it out. It makes it more easily understood, particularly to people who don't know as much about music.