Rhythm, arpeggios and your own voice: a little studio in the browser
When an idea hits you, what's the fastest way to capture it? Usually humming into your phone's voice recorder. The problem is that the hum means nothing the next day: no key, no tempo, no chords.
ChordPlai's groove section fills exactly that gap: you catch the idea with its chords, its tempo and its rhythm. Let's build one step by step.
Step 1 — lock in the key and tempo
Start by choosing a scale. Minor if you want something wistful, major if you want something bright. Then set the BPM: around 70 is calm and easy to sing over, 100–120 is energetic, and under 60 is slow and atmospheric.
You pick the time signature here too: 4/4 is the standard for pop and rock, while 6/8 gives you a swaying, waltz-like feel. Playing the same chords in 6/8 completely changes the character of the track — well worth trying.
Step 2 — turn on the arpeggiator
The moment you start the metronome, your chords stop being sustained pads and start walking as arpeggios: the notes of the chord play one at a time, locked to the tempo. That single change instantly makes a static chord held in your hand sound like an actual track.
Arpeggios work with the Electronic Keyboard and Grand Piano tones. Choose Analog or Retro and the chord stays a sustained pad — a deliberate choice for atmospheric pieces.
Step 3 — draw the rhythm yourself
The step sequencer is a grid: the rows are kick, snare and hihat, and the columns are the steps of the bar. You write the pattern by clicking the boxes. A classic starting point:
- Kick: steps 1 and 9 (the start and middle of each bar)
- Snare: steps 5 and 13 (the second and fourth beats)
- Hihat: every other step — a continuous texture
Those three rows are the skeleton of nearly all popular music. Shift the boxes around to find your own variations; your ear will tell you right away which one grooves.
Step 4 — add your own sounds
You can put any sound you like on the four sampler pads: a "hey!" from the mic, a knock on the table, jingling keys, or any audio file on your computer. Every sound you load opens its own row in the step sequencer.
Step 5 — sing over it and record
The skeleton is ready: chords, arpeggio, rhythm and your own sounds looping. Now change chords with your left hand and hum over the top. The moment you like what you hear, hit record — your vocal goes through the harmonizer and lands mixed into the video.
Three sketches worth trying
| Mood | Scale | BPM | Time signature | Tone |
|---|---|---|---|---|
| Wistful / introspective | A minor | 68 | 4/4 | Grand Piano |
| Nostalgic / retro | C major | 96 | 4/4 | Retro |
| Atmospheric / cinematic | E minor | 56 | 6/8 | Analog |
Where do you take the idea next?
Think of ChordPlai as a sketchbook: it catches the idea fast, turns it into video, and lets you share it. If the idea has legs, you can grow the same chord progression in a full studio program — but most of the time, all you need is for that idea to be captured before it disappears.
And best of all: none of this requires reading music, playing an instrument, or paying a cent.