活页乐谱，总谱:
Bob Dylan Sign On The Window

译文: 权威鲍勃·迪伦歌本. Mama, You Been On My Mind. On A Night Like This. 小格式. 鲍勃·迪伦. 吉他乐谱. 权威鲍勃·迪伦歌本. 小格式. 由鲍勃·迪伦.

译文: 计划. It listens to melodies through the computer's microphone or MIDI and shows whether they are played correctly.