One note does most of the emotional work in the A minor scale, and it's F. Play an A, then climb up to E and step one note higher. That F leans on the E below it like a sigh, and suddenly the music sounds wistful, serious, a little heartbroken. Take F away and A minor loses much of its ache. Keep it, and every tune you write in this scale carries a shadow of melancholy, even when the rhythm is bright. This guide looks at the scale the way a songwriter does: which notes feel like home, which ones want to move, and how to shape a short melody that could only be in A minor.
The notes of A minor are A, B, C, D, E, F, G. On a piano, that's simply every white key from one A to the next. No black keys at all.
Each letter appears exactly once, which is the rule for spelling a scale: you use every letter name in order, without skipping or doubling up. Because the pattern from A happens to land on naturals every time, nothing needs a sharp (#) or a flat (b). That also means the key signature, the group of sharps or flats written at the start of sheet music to tell you which notes are altered, is completely empty. No sharps, no flats.
Good news for beginners: this is the easiest minor key to read, sing and play.
Scales are built from two sizes of step. A half step is the smallest step in Western music, like moving from one piano key to the very next one, black or white. A whole step is two half steps. The minor scale (its formal name is the Aeolian mode) follows this pattern:
W - H - W - W - H - W - W
Look at those two half steps, B to C and E to F. They're the tight spots in the scale, and they're exactly where a melody feels the most pull. The first one gives you the minor 3rd (C), the note that makes the scale sound minor rather than major. The second gives you the flat 6th (F), the note that makes it sound sad.
Written as a formula against the root, the scale is 1, 2, b3, 4, 5, b6, b7. The "b" marks show which notes sit a half step lower than they would in a major scale.
Hum any melody and you'll notice some notes feel like places to rest, while others feel like they're mid-sentence. In A minor:
Singers feel this instinctively. Try singing E-F-E slowly and you'll hear the sigh. Then sing G-A and notice how it arrives without much drama.
Stack every other note of the scale and you get its chords. The Roman numerals show each chord's position; lowercase means minor.
The F chord is where that characteristic note gets a whole harmony to itself, and it's often the most emotional moment in a minor progression. A great one to write over is Am - F - G - Am. The F chord darkens things, G lifts, and Am brings you back home. For something moodier, try Am - Dm - Em - Am, which keeps everything in minor.
A minor shares its notes and empty key signature with C major, its relative major. Same seven notes, different home: C major resolves to C, A minor resolves to A. That's why many songs slip easily between the two, with verses brooding in A minor and a chorus brightening into C.
A minor's other close relative is A major, the parallel major, which shares the same root but uses three sharps. Switching between them is a classic way to swing a song from shadow to light.
A few habits make a melody unmistakably minor:
A simple example: A - C - E - F - E - D - C - B - A. Play it slowly on piano or sing it on "la." Hear how the F is the emotional peak? Put the Am - F - G - Am progression under it, placing the F chord right where the melody hits F, and the moment doubles in weight.
Your home note A sits on the low E (6th) string at frets 5 and 17, and on the A (5th) string open, at fret 12 and at fret 24. The 5th-fret A on the low E string is a natural anchor for playing the melody above, since every note of the scale falls within a few frets of it. Use the open A string as a drone underneath and the F-to-E sigh rings out beautifully.
Record yourself playing or singing a slow, held A as a drone. Over it, improvise four short phrases, and make a rule: each one must touch F and then step down to E before ending on A, C or E. By the fourth phrase, you'll be hearing exactly why this one note gives A minor its voice.
For the bigger picture, read The Natural Minor Scale (Aeolian Mode).