该应用程序播放每六个吉他弦的声音，允许简单的调整！
The application plays back the sound of each of the six guitar strings, allowing for easy tuning!
一般而言，当应用程序播放重复循环音效时，它最后应该停止该音效。
In general, when an application plays a looping sound, it should eventually stop the sound.
纪实作品：不超过10分钟的视觉展示，例如播放视频，幻灯片或者演示计算机程序。
Documentary: visual presentation (such as a video, slide show, or computer project) no more than 10 minutes long.
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