在五度圈上转动你的手指，通过扇形的选框，照到指定的音乐调性，然后点击下方和弦按钮，及时获得和弦的反馈，帮助您捕捉灵感，随时随地进行创作；也可以作为移调工具，在现场演出或即兴表演中及时通过旋转五度圈来匹配歌手的演唱调性，提供精准的伴奏；可以为初学和音乐考试等情况下，提供给练习者正确的和弦记忆，时刻为您提供辅助练习。 Rotate your fingers on the Circle of fifths, using the fan-shaped selection box to target the specified musical key, then click the chord button below to receive real-time chord feedback, helping you capture inspiration and create anytime and anywhere. It can also be used as a transposition tool. During live performances or improvisational performances, you can quickly match the singer's singing key by rotating the five-degree circle, providing precise accompaniment. It can also offer correct chord memory for beginners and during music exams, providing practice assistance at all times.