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Music Theory Basics

Fundamental music theory concepts

20 cards · practical

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Cards (20)

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Musical AlphabetA B C D E F G, repeating in cycles.
After G, it returns to A at the next pitch level.
SemitoneSmallest step in Western music; half step.
Example: E to F or B to C on a piano.
Whole StepTwo semitones.
Example: C to D or F# to G#.
SharpRaises a note by one semitone.
Example: C sharp is one half step above C.
FlatLowers a note by one semitone.
Example: B flat is one half step below B.
IntervalThe distance between two notes.
Named by number (2nd, 3rd, 4th) and quality (major, minor, perfect).
OctaveInterval of 12 semitones between same-named notes.
Sounds like the same pitch higher or lower.
Major ScaleW-W-H-W-W-W-H
C major: C D E F G A B C; often described as bright.
Natural Minor ScaleW-H-W-W-H-W-W
A minor: A B C D E F G A; often described as dark/sad.
KeyThe tonal center and scale of a piece.
Example: In G major, G feels like home and uses the G major scale.
Key SignatureSharps or flats that indicate the key.
Shown at the start of the staff to mark consistent altered notes.
TonicThe home note of a key or scale.
In C major, C is the tonic (home base).
DominantThe fifth scale degree that leads to the tonic.
In C major, G is the dominant; it pulls strongly back to C.
TriadThree-note chord built in thirds.
Uses root, third, and fifth.
Major TriadRoot, major third, perfect fifth.
Example: C E G.
Minor TriadRoot, minor third, perfect fifth.
Example: A C E.
BeatThe basic pulse of the music.
It’s what you tap your foot to.
MeasureA group of beats separated by barlines.
Also called a bar.
Time SignatureNumbers showing beats per measure and beat unit.
Example: 4/4 means four quarter-note beats per measure.
TempoThe speed of the beat, in beats per minute.
Markings like Allegro or numbers like 120 BPM set the pace.