Interactive piano piece
Learn Invention No. 1
Two interweaving melodic lines that teach each hand to lead independently. The interactive practice desk loads the full two-voice score, lets you loop any phrase at half tempo, and keeps both hands visible so you can hear each voice speaking on its own before the conversation begins.
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Press Play for the full piece, or choose Opening and switch to Wait for note for guided right-hand practice.
About the piece
The Invention that teaches every other Invention.
Bach wrote the fifteen two-part Inventions around 1720 and collected them in the Clavier-Büchlein he compiled for his eldest son Wilhelm Friedemann — a workbook of pieces ordered by increasing difficulty and complexity. The Inventions were not concert pieces; they were teaching tools, designed to show a student how to develop a single short melodic idea through imitation, inversion, and sequence across two independent voices.
No. 1 in C major is the purest statement of that purpose. Its opening four-note motif — step up, step up, leap up — is immediately answered by the left hand one beat later, launching an imitative dialogue that never fully stops. The key of C major, with no sharps or flats, removes all harmonic distraction and lets the counterpoint itself carry the piece's entire weight.
Practice path
Chase the motif from hand to hand.
Because both voices share the same material, the most effective approach is to learn each hand alone until the four-note motif feels automatic at tempo, then combine them and listen for the echo effect: every phrase in the right hand should be answered almost immediately in the left. Use the section loop to isolate the middle sequence where the imitation briefly tightens to overlapping entries.
Score basis: Generated MusicXML from Mutopia MIDI. Public domain composition; CC BY-SA 3.0; MusicXML generated for Pianodemy. Attribution: Mutopia Project (https://www.mutopiaproject.org/cgibin/piece-info.cgi?id=40).
MIDI source: Mutopia Project (https://www.mutopiaproject.org/cgibin/piece-info.cgi?id=40). CC BY-SA 3.0.
Questions
Before you practice.
Short answers for learners and for searchers deciding whether this is the right version to start with.
01Is Bach Invention No. 1 good for late beginners?
Yes. The texture is two voices in 4/4, without chords or rapid ornaments. The challenge is keeping each hand independent rather than letting the stronger one dominate.
02How many bars is BWV 772?
The standard Invention No. 1 in C major is 22 bars long, making it short enough to work through in a single focused session.
How to use this V1
Even articulation is the whole game.
Set tempo to 50% and confirm each hand lands on the beat with identical touch — the Invention exposes any unevenness because both voices play the same notes. Loop two-measure units at 75% before connecting sections. Wait-for-note is currently off, so the playback will proceed automatically; use the tempo slider to slow down tricky hand-crossing passages.