1. Keys and scales: choosing your home base
A key is simply the note that feels like home, plus the seven notes that orbit it. In C major those notes are C D E F G A B. Every chord you reach for in a song is usually built from that pool, which is why a song in one key sounds cohesive even when the chords change every bar.
Minor keys share the same pool of notes as their relative major (A minor uses the same notes as C major) but resolve to a different home note. That single shift is the difference between a bright hook and an aching verse — the notes did not change, the gravity did.
Practice it
In ChordCraft Lab, use the interactive keyboard and scale discovery to hear a major and its relative minor back to back until the difference in gravity is obvious.
2. Chord functions: why some chords pull and others rest
Number the chords in a key I through vii and you get a map that transfers to every key. In major: I ii iii IV V vi vii°. The I chord is rest, the V chord is tension that wants to fall home, and IV is the lift that sits between them.
Songwriters do not need to memorize every chord in every key — they need to recognize function. Once you hear 'that is the V,' you can write the same move in any key on any instrument.
Practice it
Chord Detective in ChordCraft Lab names the chord you play and shows its function in the key, which turns guesswork into a labelled map.
3. Progressions that already work
Most modern songs run on a small set of progressions. I–V–vi–IV is the pop workhorse. vi–IV–I–V leans melancholy. ii–V–I is the jazz cadence that also underpins countless R&B verses. I–IV is the blues and gospel bedrock.
The craft is not in finding a rare progression — it is in what you place on top. Change the rhythm, the bass note, or the melody's landing note, and a familiar loop becomes yours.
Practice it
Genre matching in ChordCraft Lab suggests progressions that fit the style you are writing in, so you start from a working frame instead of a blank page.
4. Borrowed chords and color
Borrowing means taking a chord from the parallel key — using a bVII or a iv in a major song, for example. That one outside chord is often the emotional turn of a bridge.
Secondary dominants do similar work: temporarily treat any chord as a home chord and approach it with its own V. It creates a moment of forward pull without leaving the song's key for long.
Practice it
Adaptive quizzes drill these outside chords until you can reach for them by ear rather than by chart.
5. Melody, tension and voice leading
Melody notes are heard against the chord underneath. Land on a chord tone and the line feels settled; land on the 2nd, 4th, 6th or 7th and it feels suspended and wanting.
Voice leading is the habit of moving each note in a chord the shortest possible distance to the next chord. Smooth inner motion is why a simple progression can sound expensive.
Practice it
The Ear Training Path builds the skill of hearing intervals and tensions so you can write a melody away from an instrument.
6. A 15-minute daily routine
Five minutes of ear training, five minutes writing one progression in a new key, five minutes turning that progression into two bars of melody. Consistency beats long, rare sessions.
Keep a running file of fragments. Most finished songs are two or three fragments that finally met each other.
Practice it
Daily puzzles in ChordCraft Lab give the routine a fixed starting point so you never spend the session deciding what to practice.
Put it into practice
ChordCraft Lab is our songwriting practice app: an interactive keyboard, chord and scale discovery, genre matching, daily puzzles, adaptive quizzes, Chord Detective and an ear training path. It is free to start, with a Pro tier at $7/month.