Build Your Piano Song
Create, customize and play your own piano song.
1. CHORD SEQUENCE ⊕ ⊕ Drag to reorder
2. CHORD LIBRARY
3. YOUR MELODY (Optional)
4. PLAYING STYLE
钢琴歌曲构建器怎么用
钢琴构建器把工作分给两只手：下面弹和弦，上面弹旋律。曲库里的每个和弦都能先用再放，做好的编曲会用与键盘页相同的钢琴音色播放。
挑一段听得出来的进行
曲库有 96 个和弦：十二个根音，分别配大、小、七、大七、挂留、减和增。先选一个调，再从里面取四个和弦——C–G–Am–F、Am–F–C–G、C–Am–Dm–G 都经得起反复弹。按你想听的顺序加入，拖动可以重排；这个顺序就是作曲本身。
定好每个和弦占几小节
每个和弦一小节、两小节或四小节，每小节四拍。一小节让音乐保持流动，两小节是流行和摇滚的常见感觉，四小节给句子留出落点。因为这个设置能作用于整段进行，也能只看某个和弦，八小节的主歌和四小节的副歌可以共处同一个工程。
给左手选一种型
“Block”把和弦音一起弹，是最朴素的伴奏，也是第一个该学的。“Waltz”在低音上叠两个轻和弦，是 3/4 的摇摆感；“Slow”把和弦拉长，适合抒情和氛围；“Fast”在需要推进力时重复短和弦。“Arpeggio”把和弦拆成单音，是多数流行主歌的声音。
旋律放在中央 C 之上
旋律选择器从 C3 到 G5。右手的旋律大多落在 C4 到 C5 之间，偶尔更高一些；把线留在这个范围，下面的和弦才听得清。强拍上用和弦音，中间用连接音，所以顺着稳定进行级进的旋律听起来像为它而写。也可以从旋律曲库载入一段作为起点。
速度、循环、录音
四拍一小节、90 BPM 是常见的练习速度；减半是干净学会新和弦连接最快的办法。打开循环练习，然后录当前行、选中的行或全部，并把这一条导出成 WAV。播放和导出都走共用的钢琴引擎，文件听起来和刚才一致。
每个段落存成一条行
保存的行会把进行、速度和风格一起留住：存主歌，清空序列，做副歌，再存一条，按“Play all”就会按顺序播放。这样就能不写在纸上排出整套编曲——前奏、主歌、副歌、主歌、副歌、结尾。
按构建器的排布顺序练：先只听和弦，再只听旋律，最后用慢速合在一起。如果某个和弦换不过去，第一个该改的设置是小节长度。
常见问题
Work down the numbered steps on the page. Add chords from the Chord Library (or the Add Chord dropdown) to build your sequence, optionally add a melody in step 3, pick a playing style such as Block, Arpeggio or Waltz in step 4, then set your tempo and chord duration in the right-hand panel and press Play Progression to hear the whole arrangement.
The chord sequence is your accompaniment: each chip is one chord held for the number of bars you choose, and it is played with the style you selected. The melody is the tune that plays on top of those chords. You can add melody notes one at a time with the note picker, generate a random melody, or load a ready-made tune from the Melody Library. Both parts play together during preview.
Open the Song Library panel on the right and click any song, for example Twinkle Twinkle Little Star. The builder loads that song's tempo, fills the chord sequence with a matching progression for its key, and loads the song's actual melody notes so the tune plays correctly over the chords. You can then edit any part of it and make it your own.
Yes. Tempo is set in BPM in the Song Settings card, and Duration sets how many bars each chord lasts (1, 2 or 4). Choose Whole Progression to apply one playing style everywhere, or switch to Customize Per Chord to give each chord in your sequence its own style.
Press Record in the Actions card, then play your progression. When you stop recording you can play the take back in the browser and use the Download button to save the audio file to your device. Recording captures the same audio you hear, including both the chords and the melody.