Piano Chord Visualizer & Player
學習和弦指法，聆聽和弦音色，並在虛擬鋼琴上練習。
鋼琴和弦查找器怎麼用
這一頁的每個和弦都能彈、能在鍵盤上看到、也能用構成音公式解釋。下面說明卡片每一部分怎麼讀，以及讀完做什麼。
按名字或按形狀找和弦
搜尋框會邊輸入邊篩整個曲庫，C、Cm、C7、Cmaj7 各自直達對應和弦。下面兩個篩選器依根音與類型收窄：十二個根音，配大、小、七、大七、掛留、減、增。根音加類型，是找到拼不出來的那個和弦最快的路。
鍵盤顯示的是原位排列
亮起的鍵就是和弦的原位構成音，由低到高排列。最左邊亮起的鍵是根音，鍵盤旁寫出的音名也依這個順序。先彈一次把形狀聽進耳裡，然後移開視線用手找到同樣的鍵——示意的用處就在這裡。
公式說明為什麼是這些音
大和弦是 1-3-5，小和弦是 1-b3-5，七和弦加上七度，掛留替換三度，減和弦降低五度，增和弦升高五度。音程一行列出每個音到根音的距離，這就是你在任何調上都能搭出這個和弦、而不必背九十六個形狀的原因。
轉位讓手不必移動
原位從根音開始；第一轉位把根音升高八度，第二轉位再升三度。三種排列音相同，所以選擇與前一個和弦最近的轉位，進行才會順滑而不跳躍。按鈕會逐個播放，方便聽出差別。
指法兩隻手都寫好了
RH 1-3-5 是右手拇指、中指、小指；LH 5-3-1 是同一形狀鏡像到左手。七和弦會伸到四個音，掛留與減和弦的數字會變。用練習連結在完整鍵盤上打開這個和弦，空白鍵就是延音踏板。
依和弦類別練習
先把十二個大和弦連著彈，再十二個小和弦，然後七和弦。把同一類連著聽，比依歌曲需要的順序學更快，因為手一次只需記住一種形狀。
和弦是形狀加理由。先在鍵盤上學形狀，再用公式核對：兩者對上之後，不看這一頁也能在任何調裡找到這個和弦。
常見問題
Search for the chord by name, or use the category filters to browse major, minor, 7th, maj7, sus, diminished and augmented families. Selecting a chord opens its detail view with the notes it contains and, on guitar, the fingering diagram for the shape.
Every chord has a play control that sounds the chord using the same instrument voice as the simulators. On guitar it is strummed across the strings, and on piano the notes are struck together, so you hear the chord the way you would actually play it.
Start with the open chords C, G, D, Em and Am, which between them cover a huge number of popular songs. Once you can change between them cleanly, add F and Dm, and then begin exploring 7th chords to add colour to your progressions.
Once you know a few shapes, open the Song Builder for your instrument and add those chords to a sequence. Set a tempo, choose a strumming or playing style, and loop the result so you can practise changing between the chords in time with the playback.
The piano page includes note labels for learning key names, a Mark mode for selecting and replaying specific notes, octave controls to move up and down the keyboard, and a volume control. These tools let you turn free play into focused practice on a particular scale, chord or passage.